All categories

3 years ago

PLZZ GIVING BRAINILEST

Mathematics

1 answer:

ankoles [38]3 years ago

3 0

Answer:

3.5(1.6 + 4.6 - 8.5) - 9.75
= 3.5(-2.3) - 9.75
= -8.05 - 9.75
= -17.8

Step-by-step explanation:

1.6 + 4.6 - 8.5 = -2.3
3.5(-2.3) = 3.5 × -2.3 = -8.05
-8.05 - 9.75 = -17.8

I hope this helps!

You might be interested in

A family has an annual income of $30,600 Of this, 1/4 is spent for food, 1/5 for housing, 1/10 for clothing, 1/9 for savin

Ksenya-84 [330]

Answer:

$6,120

Step-by-step explanation:

1/5 (one-fifth) of the family's annual income ($30,600) is spent on housing- as the word problem states.

You have to find 1/5 (one-fifth) of* $30,600.

Write it out as an equation.

$\frac{1}{5} \times 30600$

*The <em>of</em><em> </em>in the word equation (1/5 of 30600) simply means multiplication.

4 0

3 years ago

The rate of 8 pencils for 9 dollars

Alex_Xolod [135]

I think the answer is 1.125

4 0

3 years ago

A rocket is launched from the top of a 55-foot cliff with an initial velocity of 138 ft/s.

melisa1 [442]

For this case we have that the equation that describes the height is:

$h = -16t ^ 2 + vt + c$

Where,

v: initial speed

c: initial height

Substituting values we have:

$h = -16t ^ 2 + 138t + 55$

Then, to find the time, we use the quadratic formula:

$t =\frac{-b +/-\sqrt{b^2 - 4ac} }{2a}$

Substituting values we have:

$t =\frac{-138 +/-\sqrt{138^2 - 4(-16)(55)} }{2(-16)}$

Rewriting:

$t =\frac{-138 +/-\sqrt{19044 + 3520} }{-32}$

$t =\frac{-138 +/-\sqrt{22564}}{-32}$

$t =\frac{-138 +/-150.21}{-32}$

We discard the negative root because we want to find the time.

We have then:

$t =\frac{-138 -150.21}{-32}$

$t =\frac{-288.21}{-32} \\t=9$

Answer:

D. $0 = -16t^2 + 138t + 55; 9 s$

3 0

3 years ago

5.27 repeating as a mixed number in simplest form

charle [14.2K]

Hey there! I'm happy to help!

Let's call our fraction x.

x=5.2727272727......

We want to get rid of the repeating decimals. If we multiply our fraction by 100, we have that 100x=527.27272727.....

100x=527.2727272727....

x=5.27272727....

If we subtract these equations, the repeating stuff will be gone and we can solve for x.

99x=522

We divide both sides by 99.

x=522/99= 58/11= 5 3/11.

Have a wonderful day! :D

6 0

3 years ago

Write the following exponential expression in expanded form 28 to the 6th power. Enter your answer in the following format a • a

Alenkinab [10]

Answer:

28 • 28 • 28 • 28 • 28 • 28

Step-by-step explanation:

The exponent signifies the number of times the base appears as a factor in the product. Here, the base 28 is a factor 6 times:

28×28×28×28×28×28

7 0

3 years ago