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3 years ago

Which ordered pair is a solution to this system of equations. 7x+5y=59 and 3x-9y=159

Mathematics

2 answers:

Helen [10]3 years ago

8 0

Answer:

the answer is c

Step-by-step explanation:

7(17)+5(-12)=59

3(17)-9(-y)=159 - two negative signs cancels each other and becomes a positive

alina1380 [7]3 years ago

7 0

Your is answer should be D

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The soccer teams in a club league are ordering new jerseys. The cost is $18 per jersey plus $10 shipping per team.

Lelechka [254]

Answer:

10*7+ 18x *7 =2590

or 70 + 18x*7 =2590

Step-by-step explanation:

10*7 to find out how much the shipping costs for the 7 teams altogether

18*x because you need to find how much the jerseys cost for all the soccer teams

then multiply it by 7 to find how many players on each team

when you solve for x you get 20

there are 20 players on each on team.

4 0

3 years ago

A number x plus 10 is more than 2

makvit [3.9K]

X+10>2. The simplified answer is x>-8

4 0

3 years ago

1. Which function represents exponential decay?

MatroZZZ [7]

Answer:

y= 7^-t

Step-by-step explanation:

Equation for exponential decay:

An equation represents exponential decay if a term between 0 and 1 is elevated to the independent variable.

In this question:

First option 4 is elevated, so not exponential decay.

Second option:

$7^{-t} = \frac{1}{7^t} = (\frac{1}{7})^{t}$

$0 < \frac{1}{7} < 1$ , thus, the second option represents exponential decay.

7 0

3 years ago

Which property is shown by -3 x (6+5) = -3 x 6+ -3 x 5

aniked [119]

Answer:

The distributive property of multiplication

Step-by-step explanation:

we know that

The <u>distributive property of multiplication</u> states that the product of a number by a sum, is equal to multiply each addend by the number (This is called distributing the number) and then, you can add the products

$a*(b+c)=a*b+a*c$

in this problem we have

$-3*(6+5)=-3*6+-3*5$ ----> the number -3 is distributed

therefore

We have the distributive property of multiplication

4 0

3 years ago

Help. only questions 3 & 4 .

Maksim231197 [3]

I'm doing 3

For 3, using a table is very similar to a double number because the numbers are matching up in both ways.

On the bottom of a double number line we have like, for example,-- the bottom of the double number line would have batches. And its 1, 2, 3 ,4 , etc.

And on a table, it would be the same, the numbers on both diagrams have the same methods, have same way of lining things up but they're just drawn differently.

Hope this helped!

3 0

3 years ago