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3 years ago

9

Helllllppppppp plzzzzzzzz

2 answers:

Sedaia [141]3 years ago

8 0

Answer:

1.67

Step-by-step explanation:

frez [133]3 years ago

7 0

The answers is 1.67 !

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Nathan deposited 7/9 of his allowance into his savings account. He spent the remaining amount, or $2.50. How much did Nathan dep

inysia [295]

2/9=2.50
Allowence=2.50x9 divided by which gives you an answer of 11.25
Hope this helps you!

4 0

3 years ago

Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,

Tresset [83]

Answer:

$\boxed{y=2x^2+4x-7}$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

We substitute $(-4,9)$ into the equation to obtain;

$9=a(-4)^2+b(-4)+c$

$\Rightarrow 9=16a-4b+c---(1)$

We substitute $(0,-7)$ to obtain;

$-7=a(0)^2+b(0)^2+c$

$\Rightarrow c=-7---(2)$

We finally substitute $(1,-1)$ to obtain;

$-1=a(1)^2+b(1)^2+c$

$\Rightarrow -1=a+b+c---(3)$

We put equation (2) into equation (1) to get;

$9=16a-4b-7$

$16a-4b=16$

$\Rightarrow 4a-b=4---(4)$

$\Rightarrow -1=a+b-7$

$\Rightarrow a+b=6---(5)$

We add equation (4) and (5) to get;

$4a+a=6+4$

$\Rightarrow 5a=10$

$\Rightarrow a=2$

We put $a=2$ into equation (5) to get;

$2+b=6$

$\Rightarrow b=6-2$

$\Rightarrow b=4$

The reqiured quadratic function is

$y=2x^2+4x-7$

7 0

3 years ago

In a class there are 15 students. 8 of them like playing soccer, 6 of them like swimming, and 2 like both and swimming and playi

xenn [34]

Answer:

6+8-2=12, 15-12=3 answer=3

5 0

3 years ago

Jaclyn started the week with $284.28 in her checking

Mashcka [7]

Answer:

$165.62

Step-by-step explanation:

284.28-40-48.39-30.27=165.62

5 0

3 years ago

Read 2 more answers

PLEASE SEE PIC BELOW

zhuklara [117]

It’s too blurry to see retake the picture and ask the question again for help

4 0

3 years ago