Mathematics High School

pls help will give brainlist

Answers

Answer 1

Answer:

x = 3

y = 2

Step-by-step explanation:

5x + 4y= 23

x - y = 1 then x = y + 1

substitute for x:

5(y + 1) + 4y = 23

simplify:

9y = 18

y = 2

x = 2 + 1 = 3

check:

3-2 = 1

1 = 1

and:

5(3) + 4(2) = 23

23 = 23

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Answers

Answer:

the answer is c

Step-by-step explanation:

if right pls give brainleist

AABC is dilated by a factor of 1/2 to produce AA'B'C',

What is BC, the length of BC after the dilation? What is the measure of ZA?

A. B'C' = 32, m2A = 28°
B. B'C' = 17. m2A=62
C. B'C' = 8. m ZA=28
D. B'C' = 8. m ZA' = 14

Answers

Answer:

your answer will be C. B´C=8. m ZA=28

Step-by-step explanation:

hope it helps have a nice day

After dilation of ΔABC, the length of B'C' = 8m and ∠A' = 28°.

What is Dilation?

Dilation means changing the size of an object without changing its shape. The size of the object may be increased or decreased based on the scale factor.

When the triangle undergoes dilation, the length of its sides gets multiplied by 1/2 (dilation factor) but the angles remain the same ( since, the shape has to remain same).

Learn more about dilation here,

https://brainly.com/question/13176891

#SPJ2

I need it please help

Answers

Answer:

Step-by-step explanation:

1600/800=2 hope it helps

Answer:

i can't see the picture!!!

Step-by-step explanation:

I need help like fast plz ill give u extra points after this plz i have 10 min to answer this

Answers

Answer:

y=19√3x=38confirm be sure

There are 18 girls and 15 boys in Tyler's Homeroom what percent of Tyler's homeroom are boys? round the nearest 10th

Answers

Answer:

50% are boys

Step-by-step explanation:

Total number of kids: 18+15=33

Percent of boys: 15/33=0.4545 repeating

0.4545 rounded to tenth: 0.5

0.5 to percent: 50%

The length of AB is 5 units. What is the length of the image of the line segment after a dilation with a scale factor of 5/2 Enter your answer in simplest form in the box.

Answers

Answer:

12 [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Put 5 in fraction form ( [tex]\frac{5}{1}[/tex] ) and multiply it by [tex]\frac{5}{2}[/tex]

[tex]\frac{5}{1}[/tex]×[tex]\frac{5}{2}[/tex] = [tex]\frac{25}{2}[/tex] now simplify to 12 [tex]\frac{1}{2}[/tex]

Given the line 2x + 3y = 5, write an equation for a line in slope intercept form that is parallel

Answers

Add 2x plus 3y so then you get 5

In ΔRST, the measure of ∠T=90°, the measure of ∠R=82°, and TR = 44 feet. Find the length of ST to the nearest tenth of a foot.

Answers

Answer:313.1

Step-by-step explanation:

should be fairly easy..

Answers

Answer:

72 cm²

Step-by-step explanation:

Area of a ∆ = 1/2 × b × h

b = 12 cm

h = 12 cm

Area = 1/2 × 12 × 12

= 1/2 × 144

= 72 cm²

To track the reptile population around a lake, researchers marked 36 turtles. A few weeks later, they counted 400 turtles, of which 20 were marked. To the nearest whole number, what is the best estimate for the turtle population?

Answers

Answer: 720

Step-by-step explanation:

From the question, we are informed that cthe researches counted 400 turtles, of which 20 were marked. This implies that 20/400 = 1/20 were marked.

If the researchers wanted to track the reptile population around a lake, and the researchers marked 36 turtles, the estimate of the total population will then be:

1/20 × x = 36

x/20 = 36

x = 20 × 36

x = 720

The turtle population is 720

Riley earned $38.25 for cleaning the garage. She was paid $4.25 per hour. Write and solve an equation to find how long it took her to clean the garage. Include a label in your answer.

Answers

Answer:

It took Riley 9 hours to clean the garage.

Step-by-step explanation:

With the information provided, you can say that the amount Riley earns for cleaning the garage is equal to the price per hour for the number of hours it takes to clean the garage, which can be express as:

x=4.25y, where:

x is the amount Riley earns for cleaning the garage

y is the number of hours it takes to clean the garage

Now, you can replace x with $38.25 that is the amount that Riley earned and you can solve for y to find how long it took her to clean the garage:

38.25=4.25y

y=38.25/4.25

x=9

According to this, the answer is that it took Riley 9 hours to clean the garage.

CAN SOMEONE PLEASE ANSWER THIS ONE? I NEED HELP. I WILL GIVE BRAINIEST!

Answers

Answer:

its by 5

Step-by-step explanation:

5÷5=1

10÷5=2

15÷5=3

20÷5=4

25÷5=5

Who is better Billie Eilish or Ariana Grande? I already have my answer. Ya'll just put yours and I'll see if I agree with them or not.

Answers

Answer:

Ariana Grande 100%

Step-by-step explanation:

Answer:

Ariana

Step-by-step explanation:

THIS NOT A QUESTION THAT NEED A ANSWER, THIS IS FOR FUTURE PEOPLE WHO MIGHT NEED IT>3
In the cafeteria, there is one large table with 10 seats and many smaller tables with 4 seats. The cafeteria has a fire code restriction that the room can hold a maximum of 70 students. If a student is seated at every seat at each table, how many small tables can be in the cafeteria without breaking the fire code?
Which of the following numbers of students would be able to be in the cafeteria?

Answers

Answer:

Step-by-step explanation:

70-10=60

60/4=15

Answer:

thx

Step-by-step explanation:

Braden logged 3 2/3 hours last week in his reading journal and 2 3/6 hours last week how many fewer hours did Brayden log in his reading journal this week then last week

Answers

Answer:

1 1/6

Step-by-step explanation:

im guessing you need this fast so i wont explain it

please help! these are my last points

Answers

Answer:

Step-by-step explanation:

can I have Brainliest if right

What is the volume of a spherical water balloon with a radius of 3 inches?

Answers

Answer:

volume of a spherical water balloon=4/3πr³=4/3×π×3³=36π or 113.14in³

Please help, 20 points for this and i’ll give you the crown thing.

Answers

Answer: 9 ( 2 terms)

10 ( i think it is C)

Step-by-step explanation:

#10 c sounds smart out of all the choices

What’s the value of b when x = 12

b =
2x2(x - 5)/
10x

Answers

Step-by-step explanation:

hello

2×12*2 (12-5)/10

24*2 (7)/10

576×7/10

4032/10

403,2

Work out (4.2×107)÷(7×104)Give your answer in standard form. Work out (4.2×107)÷(7×104)Give your answer in standard form.

Answers

Answer:

6 * 10^2

Step-by-step explanation:

Simplify : (4.2×10^7)÷(7×10^4)

(4.2 × 10^7) / (7 × 10^4)

From indices : 10^a ÷ 10^b = 10^(a - b)

(4.2 / 7) * 10^(7-4)

0.6 * 10^3

= 6 * 10^2

Hence, (4.2×10^7)÷(7×10^4) = 6 * 10^2

What is the answer to this question?

Answers

Answer:

95 cm^2

Step-by-step explanation:

perimeter(p)=39cm

L=3x-1

B=2x+3

Now,

p=2(l+b)

39=2(3x-1+2x+3)

39=6x-2+4x+6

39=10x+4

39-4=10x

x=35/10

x=3.5

Putting the value of x

L=3x-1; =3×3.5-1; =10.5-1; =9.5cm

B =2x+3; =2×3.5+3; =7+3; =10cm

Again,

A= L×B

=9.5×10

=95cm^2

Find the measure of the angle VWU

PLS HELP!!

Answers

Answer= 39

Explanation:
the angles of a triangle must add up to 180°
Let’s call the missing value x
90°+51°+x°=180°
x=180-141
x= 39

What is the solution to ther equation 2(x-4)squared=50

Answers

Answer:

x=9 x=-1

Step-by-step explanation:

2(x-4)^2=50

Divide each side by 2

2/2(x-4)^2=50/2

(x-4)^2=25

Take the square root of each side

sqrt((x-4)^2)=sqrt(25)

x-4 = ±5

x-4 =5 x-4 = -5

Add 4 to each side

x-4+4=5+4 x-4+4 = -5+4

If the mean of the five numbers above is 1600, what is the value of x ?

Answers

Answer:

Value of x = 2,500

Step-by-step explanation:

Given:

700, 1200, 1600, 2000, x

Mean = 1,600

Find:

Value of x

Computation:

Mean = Sum of all number / Total number

1,600 = [700 + 1200 + 1600 + 2000 + x] / 5

Value of x = 2,500

is it just me or does anyone else like NF??

Answers

Answer:

I like him too.

Step-by-step explanation:

Which shows 8 × 22 rewritten using the Distributive Property?

Answers

8*22 = 22*8

Hope this helps!

-4, 4, -4, 4,
Describe the pattern
Determine the next two terms in the pattern.

Answers

Answer:

THe pattern switches to negative then positive

-4,4

Step-by-step explanation:

1) Joan has 24 books in her library. She bought several books at a yard sale
over the weekend. She now has 53 books in her library. How many books
did she buy at the yard sale ?

Answers

Answer:

Step-by-step explanation:

53-24=29 books purchased

Answer:

Let "x" be the number of books that Joan bought at the yard sale

24+x=53

x=29

Joan bought 29 books at the yard sale.

Let me know if this helps!

What is the distance between (-5, -5) and (-9, -2)?

Answers

Answer:

4,3 difference

Step-by-step explanation:

|-5,-5|=5,5

|-9,-2|=9,2

9-5=4

5-2=3

4,3 difference

A car travels at 180.0 km/h for 2.8 hours, at 65.0 km/h for the next 3.5 hours, and finally at 100.0 km/h for 2.0 hours. What is the car's average velocity for the entire journey?

Answers

Answer:

v = ~122.23 m/s

Step-by-step explanation:

180(2.8) + 65(3.5) + 200 = 931.5

931.5/(2.8 + 3.5 + 2) = 122.2289 ≈ 122.23 = va

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