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3 years ago

Multiply. Write your answer in simplest form. Help me plz

Mathematics

2 answers:

kondor19780726 [428]3 years ago

5 0

Answer:

Step-by-step explanation:

Put 6 over one sot he new problem is (-5/3)(-6/1)

Then multiply denominator with denominator, and numerator with numerator which will give you (30/3) since two negatives are multiplied cancel out it is positive

After simplifying you get 10

damaskus [11]3 years ago

3 0

(-5/3)•(-6/1)=(30/3)
(30/3) simplified is (10/1)

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Pam has taken 4 tests. She scored an 82, 94, 89 and 92. What would she need to score on her 5th test to have a mean of 90?

zavuch27 [327]

Answer:

Step-by-step explanation:

5*90 = 450

82+94+89+92 = 357

450-357 = 93

hope this helped :)

5 0

2 years ago

A rectangle with an area of 8 ft² is dilated by a factor of 4. What is the area of the dilated rectangle?

prohojiy [21]

Answer:

Option 4) $128\ ft^{2}$

Step-by-step explanation:

we know that

If two figures are similar then the ratio of its areas is equal to the scale factor squared

Let

z------> the scale factor

x-----> the area of the dilated rectangle

y----> the area of the original rectangle

$z^{2}=\frac{x}{y}$

we have

$z=4$

$y=8\ ft^{2}$

substitute and solve for x

$4^{2}=\frac{x}{8}$

$x=16(8)=128\ ft^{2}$

4 0

3 years ago

Read 2 more answers

Please help me, im so confused.

musickatia [10]

The value of the equation increases.

8 0

3 years ago

-3(v+3)-4(v+2) simplify

sergey [27]

Answer:

-7v - 17

Step-by-step explanation:

-3(v+3)-4(v+2)

= -3v - 9 - 4v - 8

= -7v - 17

7 0

3 years ago

Jennifer got a box of chocolates. the box is a right triangular prism shaped box. it is 7 in long. and the triangular base measu

Lera25 [3.4K]

Answer:

$A = 68.8 inches^{2}$

Step-by-step explanation:

Given : Jennifer got a box of chocolates. the box is a right triangular prism shaped box. it is 7 in long. and the triangular base measure 2in times 3in times 4in.

a = 2

b=3

c=4

To Find : what is the surface area of the box of chocolates?

Solution: The first thing we should know is the area of the triangular base.

Triangular base area:

$A1 =\sqrt{(s * (s-a) * (s-b) * (s-c)) }$

Where, s is the semi-meter of the triangle:

$s =\frac{ (a + b + c) }{ 2}$

a, b, c: sides of the triangle.

Substituting:

s = (2 + 3 + 4) /2=4.5

$A1 = \sqrt{ (4.5 * (4.5-2) * (4.5-3) * (4.5-4))}$

A1 = 2.90

Then, you must know the area of each rectangle associated with each side of the triangular base.

Rectangle area 1: Ar1 = (a) * (l)

Ar1 = (2) * (7)

Ar1 = 14

Rectangular area 2: Ar2 = (b) * (l)

Ar2 = (3) * (7)

Ar2 = 21

Rectangular area 3: Ar3 = (a) * (l)

Ar3 = (4) * (7)

Ar3 = 28

Finally the surface area is: A = Ar1 + Ar2 + Ar3 + 2 * A1

A = (14) + (21) + (28) + 2 * (2.90)

$A = 68.8 inches^{2}$

Hence the surface area of the box of chocolates is

$A = 68.8 inches^{2}$

6 0

2 years ago