plz help
Solve the system by Substitution

y=2x+15

7x+2y=−14


A(-6, 3)

B(4, -7)

C(6, -7)

D(-4, 7)

Answers

Answer 1

Answer

D

Step-by-step explanation:

y=2x+15

7=2(-4)+15

7=15-8

7=7

7x+2y=-14

7(-4)+2(7)=-14

-28+14=-14

-14=-14


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Answer:

its 56

Step-by-step explanation:

Glen got 48 out of 64 correct in his test.
What fraction of the marks did he get correct?
Give your answer in its simplest form​

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Answer:

48/64

Because 48 out of 64

Answer:

3/4 of the marks he got correct

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Answer: D

Step-by-step explanation:

If my calculations are right, it should be d

The area she be option d

16 Which expression is represented by the model shown below?

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I think it’s the first one

What is the distance between the points 4 and -5 on a number line?

Answers

Answer:

9

4--3--2--1--0--1--2--3--4--5

Positive        Negative

Step-by-step explanation:

3Hg(NO3)2
Please help me with this

Answers

Answer:

whats the question

Step-by-step explanation

what do i gotta do??

Rashads teacher buys paperback books for her classroom library. Each book costs $6, and she spends a total of
$150
Which equation models the number of books, n, she buys?
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hip

Answers

Answer:

A 6n=150

Step-by-step explanation:

Given the formula y = mx + b, what is the slope of a line, m, if x = 5, y = 7, and b =10?
A. The slope 3/5 ·
B. The slope 5/3 ·
C. The slope - 3/5 ·
D. The slope - 5/3 ·

Answers

The answer is:
C. The slope -3/5
Because -3/5 times 5 is -3 and when you combine -3 and 10 the answer is 7 and 7=7 (the y)

If f(x)=5X^3 - 2 and g(x)= x+1, find (f-g)(x) A. 5x^3+1 B. 5X^4-2 C. 5x ^3-x-1 D. 5x^3-x-3 ​

Answers

(f * g)(x)=(5x^3)*(x+1)=5x^4 +5x^3

For shipping packages, UPS charges $7.00 for the first pound, and $0.20 for each additional pound. FedEx charges $5.00 for the first pound and $0.30 for each additional pound. How many pounds will it take for UPS and FedEx to cost the same? Using p for the number of pounds, write and solve and equation to represent this situation.

Answers

Answer:

x=20

Step-by-step explanation:

7+0.20x=5+0.30x              

then take the 7 and subtracet the 2 from it, then take the 0.30 and subtract the 0.20 from it then you should get 2=0.10x      

then to get rid of the 0.10 you take it and divide it from the 2 which gives you 20 then you have 20=x and thats your answer

what is 5 plus 2 it is 7

Answers

Answer:

The answer is 7.

Step-by-step explanation:

5 + 2 = 7

I hope this helps! If it did, please consider rating and pressing thanks! Have a good day.

Answer:

7

Step-by-step explanation:

which one is 25%? please help me

Answers

So first of all you count all the blocks, so it will be 16 blocks (4x4) sideways and horizontal.

A = 16/4 marked blocks = 25%

B = 16/8 marked blocks = 50%

C = 16/6 marked blocks = ?

D = 16/10 marked blocks = 62,5%

So answer would be A

At a sports camp, there is 1 counselor for every 8 campers. If there are 320 campers attending the camp, how many counselors are needed?

Answers

Answer:

40

Step-by-step explanation:

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helpppp pleaseeeeeeeeeee

Answers

Answer:

y=5

Step-by-step explanation:

if the slope is 0, its just a horizontal line passing through 7,5

have a good day lovely :)

There is actually 2 questions

a farmhouse shelters 23 animals some of them are ducks and the others are goats . altogether these animals have 62 legs. find how many ducks and goats are in The farmhouse.

in a coin Bank , there are 104 dime and quarters worth a total of $14 . how many of each type of coins are in the bank .​

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Answer:

not  sure but i need points

Step-by-step explanation:

Day
Monday
Tuesday
Wednesday
Thursday
Friday
Minutes for Sarah
to Reach School
38
27
25
26
17
On which day did Sarah reach school in the
shortest amount of time?
How many minutes more did Sarah take to
reach school on Monday than on Thursday?

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Answer:

Step-by-step explanation:

Sickbed yeah dondrn lake

Write an expression in standard form for
the area of the rectangle.
4x - 1
+
2x + 5

Answers

Answer:

6x +4

Step-by-step explanation:

add or subtract like terms

50°
(x + 16)




Please help

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Answer:

50o • (x + 16)

Step-by-step explanation:

it stays the same.

What is the value of x in the equation: 3x – 5x + 10 = 36

Answers

This is the answerrrrrrrrr

Answer:

-13

Step-by-step explanation:

3x-5x+10=35

-2x+10=36

-2x=36-10

-2x\-2=26\-2

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After 10 minutes a place was 75 miles
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plane's average speed (miles per min)?

Answers

75 divide by 10 which is 7.5 so the average speed is 7.5. Proof 7.5 times 10 is 75

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Answer:

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Step-by-step explanation:

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Answer:

what the hell is this question

Find the exact value of Cosine (alpha + beta) given sin Alpha = two-fifths for Alpha in Quadrant II and Cosine Beta = one-third for Beta in Quadrant IV.

Answers

The exact value of cos (α + β) is (4√2-21) / 15.

What is angle?

An angle is the formed when two straight lines meet at one point, it is denoted by θ.

Given that,

Sin α = 2/5, and α is in second quadrant,

cos β = 1/3 , and β is in fourth quadrant

Since, α is in second quadrant, the value of cos α will be negative.

The value of cos α, by right angle triangle property,

cos α = -√21 / 5  

Since, β is in the fourth quadrant, the value of  sin β will be negative.

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Substitute the values here,

Cos (α + β) = (-√21 / 5)  . 1/3 - 2/5. ( -  2√2 / 3)

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The value of cos (α + β) is (4√2-21) / 15.

To learn more about Angle on:

https://brainly.com/question/28451077

#SPJ2

Answer:

D

Step-by-step explanation:

Jimmy has 10 apple’s and gets rid of 2 how many are left

Answers

Answer:

8

Step-by-step explanation:

Answer:

8 apples

Step-by-step explanation:

By saying gets rid of, it means subtraction

So, the equation would be

10-2

=8

Hope that clarified your answer!

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Answers

Answer:

y = -1x -2

Step-by-step explanation:

Y =Mx+b so y = -1 x + -2

Write the statement below as a math expression



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A.
2n+8

B.
2n-8

C.
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D.
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Answers

D. 2(n-8)

The difference of a number and eight is separate from being multiplied by 2 which is why you would use parenthesis.

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Answers

Answer:

1=x

Step-by-step explanation

Add 14 to both side(because it is opposite)

-6=8x-14

+14       +14

8=8x

Divide both sides by 8

8/8=8x/8

1=1x(or just 1=x)

The answer will be X=1.

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V
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4
Simplify your answer as much as

Answers

It's 0 I took a similar test as that one

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Answers

Answer:

y=mx+b

Step-by-step explanation:

Answer:

y=mx+b

Explanation:

The slope-intercept formula is y=mx+b. The b represents the y-intercept, which is the point where a line on a graph meets the y-axis. The coordinates for this would be (0,b). The m represents the slope, which is the rate of change. The x represents any x variable that you plug in. The y represents the y variable.

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