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3 years ago

13

HELP PLEASE ITS DUE SOON!!

1 answer:

aliina [53]3 years ago

5 0

To find out how many hours she worked, just subtract 40 from 45.5, meaning that she worked 5.5 or 5 1/2 hours of overtime. To find her overtime rate, multiply $11.95 by 1.5. This will give you an answer of $17.925 or $17.93, when rounded. To find her overtime pay, multiply $17.93 (her overtime rate) by 5.5 (the amount of overtime she worked.) This will give you a final answer of $98.615 or $98.62, when rounded. Hope this helps!

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(x + 4)(2x - 1)(x-3)=0

ale4655 [162]

Answer:

2x^{3} + x^{2} - 25x + 12

Step-by-step explanation:

There are three different enclosed brackets.

First multiply two of the brackets, then multiply the third by the answer

6 0

3 years ago

Alejandro looked at his first three science test for the quarter.His scores are represented i different ways

Darya [45]

Answer:Test one is 84% correct

Test two has a total of 20 questions

Test three he has 28 answers right

Step-by-step explanation:

5 0

3 years ago

What is the factored form of 36x4 – 25?

dalvyx [7]

(6x2 + 5) • (5 - 6x2)

5 0

3 years ago

1. Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations

sasho [114]

Answer:

The equation is $y=2x^2+4x-7$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

The point (-4,9) must satisfy this function,

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

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

The point (0,-7) must also satisfy this function,

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

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

The point (1,-1) must also satisfy this function,

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

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

We put equation 2 into equation 1 to get;

$\Rightarrow 16a-4b-7=9$

$\Rightarrow 16a-4b=16$

$\Rightarrow 4a-b=4...(5)$

We again put equation 2 into equation 3 to get;

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

$\Rightarrow a+b=6...(6)$

We add equation 5 and 6 to get;

$5a=10$

$\Rightarrow a=2$

We put $a=2$ into equation 6 to get;

$2+b=6$

$\Rightarrow b=6-2$

$\Rightarrow b=4$

The equation is therefore $y=2x^2+4x-7$

5 0

3 years ago

Choose the correct proportions.

kati45 [8]

Answer:

b) 5:7 = 15:21

Step-by-step explanation:

This questions tests our understanding of enlargement ratios.

#Determine the decimal equivalents or simplify to see which one is correct:

#a) 5:21 = 7:15

$\frac{5}{7}=0.7143\\\\\frac{7}{15}=0.4667\\\\5:7\neq 7:15$

#b) 5:7 = 15:21

$=\frac{5}{7}\\\\=\frac{15}{21}=\frac{5}{7} \# dividing \ by \ 3\\\\$ $\frac{5}{7}=\frac{15}{21}$

#c) 5:7 = 21:15

$\frac{5}{7}=0.7143\\\\\frac{21}{15}=1.4\\\\\frac{5}{7}\neq \frac{21}{15}$

#d) 21:5 = 15:7

$\frac{21}{15}=1.4\\\\\frac{15}{7}=2.1429\\\\\frac{21}{15}\neq \frac{15}{7}$

Hence, option b is the correct one as 5:7 = 15:21

5 0

3 years ago