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4 years ago

Taking Test need Help!

Mathematics

2 answers:

Cerrena [4.2K]4 years ago

8 0

The answer is D hope this help you (-;

8090 [49]4 years ago

6 0

Your answer is A, that $56 + (-$2) + (-$3)

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Fill in the blank with a number to make a true statement

Likurg_2 [28]

1. 9 2. 3/14 3. 1/98

5 0

3 years ago

. An individual wishes to invest $5000 over the next year in two types of investment: Investment A yields 5%, and investment B y

tresset_1 [31]

Answer:

The amount invested at Investment A must be greater than or equal to $2,750

The amount invested at Investment B must be less than or equal to $2,250

Step-by-step explanation:

Let

x -----> the amount invested at Investment A yields 5%

y -----> the amount invested at Investment B yields 8%

we know that

$x+y=5,000$

$x=5,000-y$ -----> equation A

$x \geq 0.25(5,000)$

$x \geq \$1,250$ -----> inequality B

$y \leq 0.50(5,000)$

$y \leq \$2,250$ -----> inequality C

$x \geq \frac{1}{2}y$ -----> inequality D

Substitute equation A in the inequality D and solve for y

$5,000-y \geq \frac{1}{2}y$

Multiply by 2 both sides

$10,000-2y \geq y$

Multiply by -1 both sides

$-10,000+2y \leq -y$

Adds y both sides

$-10,000+2y+y \leq 0$

$-10,000+3y \leq 0$

adds 10,000 both sides

$3y \leq 10,000$

Divide by 3 both sides

$y \leq \$3,333.33$ -----> inequality E

therefore

<em>Solve for y</em>

we have

$y \leq \$2,250$ -----> inequality C

$y \leq \$3,333.33$ -----> inequality E

The solution of inequality C and inequality E is

$y \leq \$2,250$

For y=2,250

x=5,000-y ----> x=5,000-2,250=2,750

$x \geq \$2,750$ -----> inequality F

<em>Solve for x</em>

we have

$x \geq \$1,250$ -----> inequality B

$x \geq \$2,750$ -----> inequality F

The solution of inequality B and inequality F is

$x \geq \$2,750$

therefore

The amount invested at Investment A must be greater than or equal to $2,750

The amount invested at Investment B must be less than or equal to $2,250

7 0

3 years ago

Test scores for a Statistics class have a mean of 78 with a standard deviation of 6. Suppose a student gets an 81 on that test.

Ostrovityanka [42]

Answer:

0.3209

in case you dont know A z-score tells you if the distribution it comes from is normal.

Step-by-step explanation:

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3 years ago

Round 4.30132 to the nearest thousandth

JulsSmile [24]

The answer would be 4.301

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3 years ago

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How do you find the perimeter of any closed figure?

irinina [24]

Answer:

add the lengths of each side of the shape. If there are units, include units in your final result.

Step-by-step explanation:

add the lengths of each side of the shape. If there are units, include units in your final result.

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3 years ago

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