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Anika [276]
3 years ago
13

What’s the answers to these please help!!!

Mathematics
1 answer:
Studentka2010 [4]3 years ago
8 0

Answer:

2): (b) 80

3): (c) 512

4): (c) 4^2+3*(7-2)+4



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Two numbers multiply to be -7 and add to be -6. What are the numbers?<br><br> Example; 2,3
rewona [7]

<u>Given</u>:

Let the two numbers be x and y.

Two numbers multiply to be -7 and add to be -6.

This can be written in equation as,

xy=-7 and

x+y=-6

<u>Value of the two numbers:</u>

Let us determine the value of the two numbers using substitution method.

Substituting y=-6-x in the equation xy=-7, we get;

x(-6-x)=-7

Simplifying, we get;

       -6x-x^2=-7

   x^2+6x-7=0

(x+7)(x-1)=0

x=-7, 1

Thus, the values of x are x = 1,-7

When x = 1 , the equation x+y=-6 becomes y=-7

When x = -7, the equation x+y=-6 becomes y=1

Therefore, the two numbers are 1 and -7

3 0
3 years ago
What is the equation of the line that has a slope of 4 and passes through the point (3, -10?
irga5000 [103]
Hello 
the equation is y = ax+b
a the slop    a = 4
y = 4x+b
the line <span>passes through (3, -10) :  -10 = 6(3)+b
b = -28
</span>the equation is y = 6x-28
3 0
3 years ago
Brandi wants to participate in an after-school program. She has to choose between one art class, three dance classes, two gymnas
jekas [21]

Answer:

d

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Evaluate the series 4-2+1-0.5+0.25 to s10. Round to the nearest tenth.
andrew11 [14]
6god is watching from views
7 0
4 years ago
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Round 4....................................... i think
nadezda [96]
Average rate of speed in miles per hour 
= 15 3/4 ÷ 2 1/4
= 63/4  ÷  9/4
= 63/4 × 4/9
= 63/9
= 7

Answer
7 mph
6 0
3 years ago
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