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Dmitry [639]
4 years ago
9

2 QUESTIONS WILL MARK BRAINLIEST!!!!!!!!!!!!89PTS HELP!!!!!!!!!!!!

Mathematics
2 answers:
Anni [7]4 years ago
8 0
1 is <span>y = 15x, in 9 years he will have saved $13,500

2 is </span><span>x2 − 4x − 21

</span>
ValentinkaMS [17]4 years ago
8 0
Question 1. 

30 - 15/ 2 - 1 = 15/1 = 15 
y - 15 = 15(x - 1) 
y - 15 = 15x - 15 
   + 15           + 15
y = 15x 

Answer: <span>y = 15x, in 9 years he will have saved $13,500



Question 2.
(x - 7)(x + 3) 
x^2 + 3x - 7x - 21 (Combine like terms)
x^2 + 4x - 21 <------------------Answer

Thus, the answer is Choice C. </span>
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4. Two more than a certain number is 15 less<br> than twice the number.
vredina [299]

Answer:

x = 17

Step-by-step explanation:

2+x = 2x-15

subtract x on both sides

2 = x -15

add 15 to both sides

17 = x

------------------

17+2 = 2(17)-15

19 = 34 -15

19 = 19

3 0
4 years ago
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Answer:

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5 0
3 years ago
Read 2 more answers
Helen spent 7.75 to purchase 23 snack sized bags of chips (c) and pretzels (p). Chips cost 0.25 and pretzels cost 0.50. How much
hodyreva [135]

Answer:

15 chips and 8 pretzels

Step-by-step explanation:

According to the problem, calculation of the given data are as follows,

Total spent = $7.75

Number of snacks = 23

Chips cost = $0.25

Pretzels cost = $0.50

Let number of chips = X

So, number of pretzels = 23 - X

So, we can calculate number of snacks by using following equation

0.25X + 0.50 ( 23 - X) = $7.75

0.25X + 11.50 - 0.50X = 7.75

0.25X - 0.50X = 7.75 - 11.5

-0.25X = -3.75

X = -3.75 ÷ -0.25 = 15

Hence, Number of chips = 15

Number of Pretzels = 23 - 15 = 8

8 0
3 years ago
What goes in the green box and what is 6 * 28 ​
Y_Kistochka [10]
6*28= 168
You put 168 in the green box
7 0
3 years ago
Mike installed the window shown. How many square feet is the window? Use 3.14 for pi. Round to the nearest tenth.
Natali [406]

Answer: 3.9ft²

Step-by-step explanation:

Find the area of the rectangle first:

= Length * Width

= 2 * 1.5

= 3 ft²

Find the area of the semi-circle by finding the area of a circle and dividing it by 2:

= πr²

= 3.14 * 1.5/2 * 1.5/2

= 1.76625‬ft²

Divide by 2:

= 1.76625‬/ 2

= 0.88 ft²

Add the area of the rectangle to the semi-circle:

= 3 + 0.88

= 3.9ft²

3 0
3 years ago
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