Mathematics High School

Sahil got 28 questions right on the math test. Angelina got 7 more wrong answers than Sahil. There were 40 questions on the test. How many answers did Angelina get right on the math test? Which equation represents this situation?


A. a + 7 = 12
B. a + 7 = 28
C. 7 + 12 = a
D. 7 = 40 - a

Answers

Answer 1

Answer:

40-28=12 Sahil got 28 right and 12 wrong

12+7=19 Angelina got 19 wrong and 21 right

40-19= 21

B would be correct

a +7=28

a= 28-7

a=21

Related Questions

Convert r=8cos⁡θ+2sin⁡θ to rectangular equation

Answers

Answer:

Convert

r

=

8

cos

θ

−

2

sin

θ

to Cartesian form

#x^2 + y^2 - 8 x +2 y = 0, using

r

=

√

x

2

+

y

2

≥

0

and

(

x

,

y

)

=

r

(

cos

θ

,

sin

θ

)

.

The Socratic graph of this circle,

with center at

(

4

,

−

1

)

and radius

√

17

.

is immediate.

graph{(x^2+y^2-8x+2y)((x-4)^2+(y+1)^2-0.04)=0[-1 23 -6 6] }

Can someone help me thx

Answers

Answer: 118



Explanation:

Since ∠A=∠ADB: ∠ADB=61°. The sum of the interior angles of any triangle is 180°, thus:

61°+61°= 122
180-122=58°
∠DBA=58°

Since triangle BCD is an equilateral triangle, all the interior angles are the same:

180/3=60
∠DBC=60°
∠BCD=60°
∠CDB=60°

Since angles DBC and DBA make up angle ABC, just simply add the two angles together:

58+60=118°

Therefore, ∠ABC is 118°.

3x – 7 y = -27
16x - 5y = 0
(using the linear equation system and solving for x,y)

Answers

Answer:

x=5 and y=6

Step-by-step explanation:

Step: Solve 3x−7y=−27 for x:

3x−7y=−27

3x−7y+7y=−27+7y

3x=7y−27

[tex]\frac{3x}{3} =\frac{7y-27}{3}[/tex]

[tex]x=\frac{7}{3} y-9[/tex]

Step: Substitute   [tex]\frac{7}{3}y-9[/tex] for x in 6x−5y=0:

6x−5y=0

[tex]6(\frac{7}{3}-9)-5y=0[/tex]

9y−54=0

9y−54+54=0+54

9y=54

[tex]\frac{9y}{9} =\frac{54}{9}[/tex]

Therefore y=6.

Step: Substitute 6 for y in x= [tex]\frac{7}{3} y-9[/tex]:

[tex]x=\frac{7}{3} y-9[/tex]

[tex]x=\frac{7}{3}(6)-9[/tex]

Therefore x= 5.

x= 5 and y= 6

Hope this helped! :)

Find the product it the image


pls i need this answer il give 10 points

Answers

Answer:

-42

Step-by-step explanation:

The big dog means multiply and 6*-7 equals -42 100% sure


PLEASE HELP!

NEED ANSWERS FOR A,C,D,E,F

Answers

20,3,40,50,20 need to use formula

HELP ASAP PLZ!!!

Use the image blow!

Answers

Answer:

A is 1/2 and the answer for B is 2/3

Select the correct answer.
Which statement is true for the vertical number line?
OA. -2. is located below – 33
OB. -4 is located below 4
OC.
3.25 is located above 3.75.
OD. - is located below -
-2
O E.O is located below -0.87.

Answers

Answer:

option b is answer answer

Answer:

its B

Step-by-step explanation:

The table below gives the dimensions of a painting and a scale drawing of the painting.
Find the scale factor of the drawing to the real painting.
Write your answer as a fraction in simplest form.

Answers

Answer:

7:1 for length and 7:1 for width

Step-by-step explanation:

36 people attended Quintero’s Super Bowl party. Each person cheered for either the Patriots or the Rams. If 15 people were rooting for the Patriots, which of the following equations could be used to find how many , f , we’re cheering for the Rams.

Answers :
A : f - 15 = 36

B : 15 + f = 36

C : f + 36 = 15

D : f = 36 - 15

E : 15f = 36

Thank you helping me whoever answers this

And you’ll get brainliest plus extra points 100

Answers

Answer:

the answer is D. 36 fans in total minus 15 fans that rooted for the rams. Equals the amount of fans that rooted for the Patriots

Help me with my math please, it’s 6th grade

Answers

The one that has -7 and -13 on the first line.

Itd be the 2nd answer from the top.

which input value produces the same output value for the two functions?

Answers

Step-by-step explanation:

where are the 2 functions ?

help me solve this for geometry class !

Answers

Answer:

A diameter is a chord.

Step-by-step explanation:

A diameter is a chord.It is the longest chord.

The Correct answer is A. A diameter is a chord !!

Nuts Berry Farm sells nuts for $60 for 4 pounds. Today, and just for today only,
Nuts Berry Farm is giving a 30% discount to all those who will buy nuts today.
Enter how much, in dollars, is a pound of nuts today after the discount.

Answers

Answer:

$10.50

Step-by-step explanation:

First, find the cost of a pound of nuts.

Divide the price by the number of pounds:

60/4

= 15

Calculate the price with the 30% discount by multiplying this by 0.7:

15(0.7)

= 10.5

So, after the discount, a pound of nuts will cost $10.50

Need help ASAP ITS DUE SOON PLEASE AND SHOW WORK !!!

Answers

Answer:

33.51032

Step-by-step explanation:

Because equation is 3/4 times r to the 3 power times pi

2 to the 3 power=8

8 times 3/4=32/3

32/3 times pi = 33.51032

Answer:

V= 33.510 m³

Step-by-step explanation:

= =

4 4

3 3

n n ( pi)

r 2 =

V3 4 33.51032 m³

I didn't get to round it.

What is the slope of the line with the equation y +2 = -3(x – 7)?
OA.m = -3
O B. m = 3
O C. m = 2
O D. m = -7

Answers

Answer:

A.m = -3

Step-by-step explanation:

This equation is written in point slope form

y-y1 = m(x-x1)

y +2 = -3(x – 7)

y - -2 = -3(x – 7)

The slope is -3 and the point is (7, -2)

PLEASE HELP ME !! THANK YOU!!

EXPLANATION = BRAINLIEST & FIVE STAR RATING

What is tan E? Give your answer as a simplified fraction.

Answers

Answer:

28/45

Step-by-step explanation:

tan = opp/adj

tanE = 28/45

Hehehehehehehhehehehehsdhhd

Answers

Answer:

32 miles

Step-by-step explanation:

The cost to rent a moving truck is a flat fee of $25 plus $0.60 per mile. The equation c = 25 + 0.6m models the cost, c, in dollars for the number of miles, m, traveled in the truck.

Identify the independent and dependent variables.

The
is the independent variable.

The
is the dependent variable.

Answers

Answer:

Independent- Miles traveled, Dependent- cost

Step-by-step explanation:

3dg3nuity

Answer:

I did it :D

Step-by-step explanation:

which function is the inverse of f(x)=2x+3

Answers

Answer:

jssisvshdvdbd sjjsjdgdjd

Step-by-step explanation:

ususueuwgeieyevekeuecrjie r

Highest common factor of 15 and 20

Answers

Answer:

The highest common factor is 5

Step-by-step explanation:

3x5=15  4x5=20

Answer:

answer is 5

Step-by-step explanation:

See image below, This is a good website  called Cue math explaining.  

https://www.cuemath.com/questions/gcf-of-15-and-20/


Points J and Kare midpoints of the sides of triangle
FGH.
What is the value of y

Answers

Answer:

7

Step-by-step explanation:

As we can see, the sides of the bigger triangle is twice that or the smaller

Thus, we have it that for similar sides, we simply have to multiply the smaller side length by 2 to give the larger

We have this as:

2(2y + 5) = 5y + 3

4y + 10 = 5y+ 3

5y-4y = 10-3

y = 7

F(x)=x^2+5 and g(x)=-3x-8
Find g(1) and f(g(1)).

Answers

Answer: I believe that this is the answer

According to the graph, which statement must be true?
It will take her 2 hours to read 60 pages.
It will take her 3 hours to read 120 pages.
It will take her 4 hours to read 180 pages.
It will take her 5 hours to read 210 pages.

Answers

According to the graph, it will take her 3 hours to read 120 pages

How do I work this out ?

Answers

Answer:

protractor

Step-by-step explanation:

use a protractor or  an online protractor

this is my weakest subject i really need some help​

Answers

y1 x-1. ......

Step-by-step explanation:

Y = 1 X = -1.

Use the distributive property to write an expression that is equivalent to 1/2 (8y + (-x) + 12)

Answers

Algebra

[tex] \frac{1}{2} (8y - x + 12) = a[/tex]

Divide everything by two, or times everything by 1/2.

[tex]4y - \frac{1}{2} x + 6 = a[/tex]

This is as far as you could go due to no like-terms.

Given: Right triangle ABC with altitude Line segment C D

Prove: a2 + b2 = c2

Triangle A B C is is shown. Angle A C B is a right angle. Altitude h is drawn from point C to point D on side A B to form a right angle. Line segment A D is labeled e, line segment D B is labeled f, side A B is labeled c, side B C is labeled a, and side A C is labeled b.

Complete the paragraph proof.

You can use the similar triangles formed by the altitude to write ratios for corresponding sides. Using ratios from the large and medium triangles, StartFraction c Over a EndFraction =
. This can be rewritten as
= a2. Using ratios from the large and small triangles,
= StartFraction b Over e EndFraction. This can be rewritten as b2 = ec. By substitution, a2 + b2 =
. You can then factor as a2 + b2 = c(f + e). From the large triangle, you know (f + e) =
. So, a2 + b2 = c2 by using substitution.

Answers

Answer:

answer in pic

Step-by-step explanation:

The proof of the right-triangle is: [tex]a^{2} + b^{2}=(c)^{2}\\[/tex].

To prove that [tex]a^{2} + b^{2}=(c)^{2}\\[/tex].

What is the Pythagorean Triple?

The Pythagorean triple can be described as any three set of integers representing sides of a right triangle that are solutions to the Pythagorean Theorem, which is given as:

[tex]a^{2} + b^{2}=(c)^{2}\\[/tex]

Given that:

To proof:

The proof of the right-triangle is:

[tex]a^{2} + b^{2}=(c)^{2}[/tex]

from question it is given that

c=e +f

By Pythagoras theorem, we have:

[tex]a^{2} + b^{2}=(f+ e)^{2}[/tex]

Therefore, the proof of the right-triangle is:

[tex]a^{2} + b^{2}=(c)^{2}\\[/tex]

Learn more about Pythagorean Triple here:

https://brainly.com/question/24161728

#SPJ5

A number decreases from 25 to 8, what is the percent of decrease?

Answers

Answer:

68%

Step-by-step explanation:

25-8=17

17/25=0.68

68%

Hope this helped :)

8 is a 68% decrease of 25.

Which ordered pair represents an x-intercept?

Please help!!!!

Answers

Answer:

If anything it would be blue.


HELP PLEASE ASAP…..,……

Answers

Answer:

6. 477.5

7. 498.1

8. 452.4

Step-by-step explanation:

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