2 7th grade math multiple choice questions help! awarding brainly!

2 7th Grade Math Multiple Choice Questions Help! Awarding Brainly!
2 7th Grade Math Multiple Choice Questions Help! Awarding Brainly!

Answers

Answer 1
Answers:
1. up 3 units and right 6 units
2. Translation

Explanation:

For question 1,
R’s value
Old = (-3,1)
New = (3,4)

If the figure is moved left or right, we use the x-coordinate..

New x-coordinate is 3 and old is -3.
3 - (-3) = 6

If the figure is moved up or down, we use the y-coordinates.

New y-coordinate is 4 and the old is 1.

4 - 1 = 3

Since ‘6’ is positive, it has been moved to the right. And ‘3’ is also positive, it have been moved up.


For question 2:
It is translation because the shape is the same only the position is moved.

Related Questions

Find the area of the base of a box of height 4cm and lateral surface area 120cm.sq if its length is twice its breadth.

Answers

Answer:

The area of the base of a box is 1800 cm².

Step-by-step explanation:

We have:

H: is the height = 4 cm

[tex]A_{l}[/tex]: is the lateral surface area = 120 cm

L = 2B                                                                

We can find the breadth of the base by using the lateral surface area and the height:

[tex] A_{l} = H*B [/tex]        

[tex] B = \frac{A}{H} = \frac{120 cm}{4 cm} = 30 cm [/tex]

Now, if the length is twice its breadth we have:

[tex] L = 2B = 2*30 cm = 60 cm [/tex]

Hence, the area of the base is:

[tex] A_{b} = B*L = 60 cm*30 cm = 1800 cm^{2} [/tex]

Therefore, the area of the base of a box is 1800 cm².

I hope it helps you!                                                        

I don’t know if it’s decreases or increases

Answers

Answer:

I'm pretty sure decreases since the number is negative

hi please help me with this i’ll give brainliest if you give a correct and show your work!

Answers

1. (1.35)x(.42)

1.35
x. .42
________
270
5400
________
.5670

You need to have the total number of decimal places from the original two numbers. 1.35 has two decimal places and .42 has to decimal places you have a total of four decimal places, Which means 5670 is .5670

2. (.22)x(.04)

.22
x. .04
_______
88
00
_______
.0088

you need to have the total number of decimal places from the original Two numbers. So .22 is two decimal places and .04 is two decimal places, so you will need to have for decimal places. That means that the answer 88 needs to be translated into .0088

You have a sack of 90 balls. 35 blue, 30 green and 25 pink. If you randomly pull one ball out of the bag, what is the probability of pulling a green ball?

Answers

Answer:

P(Green ball) = 1/3

Step-by-step explanation:

You have a sack of 90 balls. 35 blue, 30 green and 25 pink. If you randomly pull one ball out of the bag, what is the probability of pulling a green ball?

The Probability of pulling a green ball =

P(Green ball) =

Number of green balls/ Total number of balls

= 30 green balls/90 balls

P(Green ball) = 1/3

Sally's dance school had 60 students last year. This year there are only 48 students enrolled. By
what percent did the enrollment decrease? Show all of your work to justify your answer.

Answers

Answer:

20%

Step-by-step explanation:

60-48=12

changed ÷ original x 100%

= 12 ÷ 60 x 100%

= 20%

can someone help me solve x + 5 = 12

Answers

Step-by-step explanation:

Given.

x + 5 = 12

x = 12 - 5

x = 7

Hope it will help ☜☆☞

x+5=12
12-5
x=7

it’s simple just subtract. you
got this

please help me ( show ur work it’s multiple choice ):)

Answers

b=29.4 !!!!!!!! this how i do it

describe and correct the error in solving the proportion?

Answers

Answer: Choice B

They did not perform the cross multiplication properly

The correct step should be m*24 = 8*15 which solves to m = 5

========================================================

Explanation:

In general, if we had the equation A/B = C/D, then it cross multiplies to A*D = B*C. We refer to this as cross multiplication because of the shape made when we connect the terms (to figure out what multiplies with what). The diagram below shows what I mean.

So that's why m/8 = 15/24 cross multiplies to m*24 = 8*15

Simplifying things a bit leads to 24m = 120. Then we divide both sides by 24 to fully isolate m and we get m = 120/24 = 5. Therefore, m = 5.

A middle school principal wants to change the lunch menu at the school. The principal surveys
the students to determine how the students would feel about the changes. Which survey
method will best produce the representative sample?

Answers

Canteen survey method with different food options.

Multiply.
Your answer should be a monomial in standard form.
(4z^3)(-3z^3)

Answers

The answer you are looking for is -12z^6. To find this answer, you first multiply the two values (4 and -3).

4 × -3 = -12

Next, you multiply the variables and exponents. When multiplying with exponents, you simply just add the exponents together. For this instance, simple just add z3 and z3 to get z^6.

Thus meaning your final answer as a monomial is -12z^6. Here's an image to show how i solved the problem. I hope this helps!!

Find the missing value. Hint: Use the number line to find the missing value. -7= -(-2)

Answers

What missing value? Also there is no number line

Answer:

-9

Step-by-step explanation: I know this problem since I use khan academy too and I got the answer wrong and it helped by saying it was -9.

DIRECTIONS:
Using the Four Principal Rays explained in page 9, analyze and locate the image formed in curved mirrors. The first one is done for you (3 points each). (construct ray diagrams to determine the, Location, Orientation, Size, and Type of images formed by curved mirror)

Answers

J guard hock GB DH o'clock coco bcoz bcoz iconic kc gn GN on bb GB b TV GB FC GB FC DC DC GB GB GB GB highly if ox fb TV FB GB NM. Been

Steps for drawing the image of light rays includes; rays through the focus

are reflected parallel and rays through the center passes straight through.

Correct Response;Please find attached the required drawing showing the path of rays from the object to the image;

Method used in the drawing of light rays;

Reflection of light from concave mirrors.

B. The object at the center of curvature, C;

The image at C

Size of the image = Size of the object

Image is inverted

Image is real

C Object between C and F

Image further than CImage larger than objectImage is invertedImage is real

D. Object at F;

Image at infinity

E. Object between F and the vertex

Image is virtual

Image is upright

Image is larger than object

F Object further from C (convex mirror)

Image is virtual and smaller than object

G. Object between the focus, f and the vertex

Image is virtual and smaller than the object

Learn more about the the image formed by concave and convex mirrors here:

https://brainly.com/question/9895618

how to find the angle?​

please help I'll give BRAINIEST
** if there is two responses **

Answers

Answer:

m∠CDE = 37°

Step-by-step explanation:

Since, AB║CD and AC is a transversal line.

∠EAB ≅ ∠ECD [Alternate interior angles]

m∠EAB = m∠ECD = 25°

m∠CED + m∠AED = 180° [Linear pair of angles]

m∠CED + 62° = 180°

m∠CED = 180° - 62°

              = 118°

By triangle sum theorem In ΔCDE,

m∠CED + m∠CDE + m∠ECD = 180°

118° + m∠CDE + 25° = 180°

m∠CDE + 143° = 180°

m∠CDE = 37°

A match box dimension is 4cm×2.5cm×1.5cm.What will be volume of a packet containing such 6 match boxes?How many such packets can be placed in a cardboard box whose size is 60cm×30cm×24cm?

Answers

Match box volume is 15cm

You can fit 2,880 match boxes in the cardboard box which is 43,200cm

help a dude out lol this is overdue

Answers

Answer:

5

Step-by-step explanation:

The right angle is 5 so that means the x is 5

Answer:

5

Step-by-step explanation:

9+6=15, 3*3=9 3*5=15 so the answer for x is 5

525=w(w+20) what is the length and width using this formula

Answers

Answer:

525/22

Step-by-step explanation:

if i have 7 quarters, 13 nickles, 23 pennies, 6 dimes and two dollar bills, how much money do i have

Answers

Answer:

$5.23

Step-by-step explanation:

(7x.25)+13(.05)+.23+6(.10)+2.00=1.75+.65+.23+.60+2.00=$5.23

Answer:

$5.23

Step-by-step explanation:

7 quarters: $1.75

13 nickels: $0.65

23 pennies: $0.23

6 dimes: $0.60

2 dollar bills: $2

Total: $5.23

Can someone please help with these two questions . Thank you

Answers

Answer:

D for the first question

A for the second one

Step-by-step explanation:

The multiples are 27, 81, 243

The factors are 1, 9, 27

The population of a certain animal species decreases at a rate of 2.5%. If there are 400 of this animal in the wild, using an exponential function, predict approximately how many there will be in 4 years. Round to the nearest whole number.

Answers

X=y so y is the factor of 20 so the answer would be 20y

Answer:

20 years

Step-by-step explanations:

You just do the work and figure it out and it gives you the answer of 20 years

Inscribed angles!!

Find A, B, and C

Answers

sum of all exterior angles equals to 360

sum of interior angles equal to 180

divide 360 by 122 to find b the rest you'll get it

as you go further in the question

which quantity is proportional to 6/4?
check all that are true
36/24
2/3
72/36
3/2
91/48

Answers

i think that the answers are 36/24 and 3/2. hope this helps!

In a survey of U.S. Adults, 16% say they have had someone take over their email accounts without their permission. You randomly select 250 U.S. Adults and asked them whether they have had someone take over their email accounts without their permission. Find the probability that the number of U.S. Adults who say they have had someone take over their email accounts without their permission is : a. At most 40 b. Less than 45 c. Exactly 48

Answers

Answer:

a. At most 40

Step-by-step explanation:

If we take the survey that was done as a basis then we would use the 16% that was obtained as the number of overall US adults that have had their accounts used without their permission. Assuming that the 250 selected individuals were selected at random and without bias then those 250 would also be representative of the entire population. Therefore, we would simply need to multiply the number of selected individuals by the percentage in decimal form.

16 / 100 = 0.16

250 * 0.16 = 40

Finally, we can see that roughly 40 individuals would have had their email used without permission.

The original price of a cell phone was $250. And its price was marked down to $218 during the holiday. What was the percentage of discount for the cell phone during the holiday? %​

Answers

Answer:

I would say almost 15% the price dropped $32

PLEASE HELP
Sit-up

Push-up
Plank
Arm
circles
V-stretch
which event has a theoretical probability
of?
A. spinner landing on either sit-up
or V-stretch
B. spinner landing on push-up
c. spinner landing on either sit-up.
plank, or arm circles
D. spinner not landing on sit-up

Answers

Answer:

A

Step-by-step explanation:

Answer A has two of the five possibilities, and each section is equal so there is an equal probability for each. Add up the two possibilities for 2/5.

Answer is A just took the test

Which of the following is an example of natural selection?

A) Hummingbirds drinking nectar from a plant.

B) Whales and dolphins swimming to the water’s surface to breathe.

C) Sloths making their homes high in trees to protect themselves from predators.

D) Brown-colored lizards surviving and reproducing because they are better able to camouflage themselves from predators.

Answers

Answer:

A) Hummingbirds drinking nectar from a plant.

Step-by-step explanation:

Here are some examples of natural selection: In a habitat there are red bugs and green bugs. The birds prefer the taste of the red bugs, so soon there are many green bugs and few red bugs. The green bugs reproduce and make more green bugs and eventually there are no more red bugs.

Plz help me get the right answer

Answers

Answer:

Sum is the addition -8x^2+3-9x^2+3x-3 Combine like terms -17x^2+3x

A sales woman earns 40% commission on all merchandise that she sells last month she sold $300 worth of merchandise how much commission in dollars did she earn last month

Answers

Answer:

120$

Step-by-step explanation:

Alaina needs to sell 225 boxes in order to be the top seller. She sells thin mints and samoas to all of her customers for a total of $628.00 in sales. The thin mints sell for $3.00 each and the samoas sell for $2.50 each. Which system of equations below could be used to find how many boxes of thin mints and samoas were sold?

Answers

Answer:

94 boxes of samoas

131 boxes of thin mints

Step-by-step explanation:

m=mints

s=samoas

s+m=225    m=225-s

s(2.5)+m(3)=628

2.5s+3m=628

substitute for m

2.5s+3(225-s)=628

2.5s+675-3s=628

reduce

-0.5s=-47

s=94

m=131

PLEASEEE i REALLY need help!! This is due tonight!!

1. Think of two things that you can measure. Give one that requires high precision, or a low level of uncertainty. Give another that can have lower precision, or a higher level of uncertainty.

2. Explain why you made your choices. Why does one measurement need to be more precise than the other?

Answers

Problem 1

Two things you could measure is a person's height and the speed needed to reach the planet Mars. The person's height can be measured with a low level of precision, which means we don't need to be that accurate. We could say "that person is about 6 feet tall" and whoever is listening would get a sense of their height. In contrast, we need high precision for a rocket speed to Mars because getting this figure wrong would likely cause disaster down the road. Very complicated mathematics is essential to make sure we hit the target required in space.

===============================================

Problem 2

As mentioned, we need high precision when it comes to anything dealing with space travel. If the calculations are wrong, then the spacecraft could crash somehow. As one example where things went wrong, engineers used the wrong values and the Mars lander ended up crashing into the planet rather than landing safely. The high cost of such space exploration missions means that it's very crucial to get precise values as much as possible, to as accurate as possible. Things like discussing a person's height isn't that essential to be very precise as we can just relay estimates to whoever we're talking to. This informal setting doesn't demand as much accuracy compared to something like a rocket launch.

Kelly tiene algo de dinero ahorrado. Después de cortar el césped el sábado, agrega $ 40 a sus ahorros. Escribe una expresión para representar cuánto dinero ha ahorrado Kelly

Answers

Answer:

x + 40

Step-by-step explanation:

Con la informacion de la pregunta vemos que Kelly tiene una cierta cantidad de plata ahorrada. Este ahorro se puede demonstrar con la variable x. Despues de completar su trabajo le pagaron $40 y los agrego a sus ahorros. Entonces simplemente tenemos que sumar los $40 a los ahorros que ya tenia (x). Esto nos dara la cantidad nueva de sus ahorros

x + 40

Other Questions
a = 10 m/s - 5 m/s5S Which binomial is a factor of 25x2 + 40 xy + 16y??A. x - 4yB. x + 4yC. 5x + 4yD. 5x - 4y the answer is C Please help me its urgent thank you !!:)9 Practice making each of these nouns plural in Spanish. Remember to change the article in front of the word as well as the ending of the word. NOUNS WITH 1. el estudianteDEFINITE ARTICLES ____________________2. la muchacha ___________________ 4. el bolgrafo ____________________ 6. el vestido ____________________ 8. el profesor _____________________ 10. la corbata _____________________ 12. el telfono _____________________ 14. el peridico ____________________ 16. la composicin __________________ 3. la vecina5. la clase7. la camisa9. el mdico11. el lapiz13. la revista15. el hotelNOUNS WITH17. un estudiante ___________________19. una grapadora ___________________21. una hoja de papel _________________23. una televisin ___________________25. una ensalada ____________________27. una hamburguesa _________________29. un da _________________________Make these plural nouns singular, dont forget to change the article!31. unos profesores _____________________32. unas ciudades_______________________________________ ____________________ ____________________ ____________________ ____________________ ____________________ ____________________ INDEFINITE ARTICLES 33. unas directoras ____________________ 35. unas pizzas _______________________ 37. unas mochilas _____________________ 39. unos gatos _____________________34. unos coches____________________ 36. unos estudiantes ________________ 38. unos amigos ____________________ 40. unas frutas ____________________18. una doctora ____________________ 20. un sacapuntes __________________ 22. una computadora ________________ 24. un examen _____________________ 26. un muchacho ___________________ 28. un burrito _____________________ 30. un reloj _______________________ Plz help me I am bad at math factorise 2tv+t-10v-5and make the k the subject The electron configuration of an element is 1s22s2. How many valence electrons does the element have? 1 2 3 4 How did the geographic distribution of religions in Europe in the 17th century impact colonies in the Americas? A. It led to each colony having a government ruled by religious leaders. B. It led to each North American colony being made up of Catholic colonists. C. It led to each colony having colonists that mostly followed a single religion. D. It led to each South American colony being made up of Protestant colonists. -2x -4y = -10-7x -4y = -15What is this in a ordered pair? (x,y) If the length of the shorter arc AB is 22 cm and C is the centre of the circle then the circumference of the circle is : solve the problem down below:ty :P Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is miles per hour, with a standard deviation of miles per hour. Estimate the percent of vehicles whose speeds are between miles per hour and miles per hour. (Assume the data set has a bell-shaped distribution.) State the four factors the magnetic force moving in magnetic field depends on HELP!! Will give brainliest!!When an author makes their character too perfect, what is MOST likely to happen?A. The story becomes less relatable.B. The reader is prevented from accessing the character's internal dialogue.C. The character's ambition is weakened.D. The story becomes harder to visualize. I need help ahhhhhh! I need this answer ASAP Someone please help me state all the possible names for the figure Please help this is geometry I would really appreciate it Solve for d. 2d + 8 = 24 ASAP!!! I NEED HELP!!! On these three parts!!(Will give Brainliest:)) 1) Pat mixes 5 quarts yellow, 2 quartsorange and 1 quart whte paint .If shewants to make 24 quartsof this mixture , how many quarts ofeach color does she need?