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3 years ago

Use the order operations 27+6(2X2-1) 4x2-5

1 answer:

5 0

27+6(2*2-1)4*2-5
2*2=4
27+6(4-1)4*2-5
4-1=3
27+6(3)4*2-5
6*3=18
27+(18)4*2-5
18*4=72
27+(72)*2-5
72*2=144
27+(144)-5
27+144+171
171-5=166

So the answer is 166.

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A cup of coffee is cooling down such that its temperature is decreasing at a constant rate of 8% per minute. Let’s say the coffe

KengaRu [80]

Answer:

Temperature after 1 minute = 184 ° F

Step-by-step explanation:

starting temperature = 200 °F

rate of decrease = 8% per minute

Temperature lost = 8% of 200 = 8/100 × 200 = 0.08 × 200 = 16 °F

It therefore means that after 1 minute, the cup of coffee loses 16 °F,

∴ Temperature after 1 minute = (starting temperature) - (lost temperature)

= 200 - 16 = 184 °F

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2 years ago

Which set of numbers could represent the side lengths of a right triangle? A. 0.1, 0.2, 0.3 B. 1.8, 2.4, 3 3, 8, 10 D. 5, 7, 12

Lelechka [254]

Answer:

B. 1.8, 2.4, 3

Step-by-step explanation:

You can make use of pythagore to prove each of the given options and you'll see that B is the correct answer:

A) $\sqrt{0.1^{2}+0.2^{2}}=0.22$

B) $\sqrt{1.8^{2}+2.4^{2}}=3$

C) $\sqrt{3^{2}+8^{2}}=8.54$

D) $\sqrt{5^{2}+7^{2}}=8.6$

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2 years ago

The pool at the apartment building is 30 feet long, 20 feet wide, and 5 feet deep. It has been fikked 4 feet deep. How many more

Vesna [10]

Answer:

600 cubic feet of water

Step-by-step explanation:

If the pool is filled 4 feet and the pool is 5 feet deep, that leaves 1 foot of depth left to fill. This makes the volume equation 30 x 20 x 1 which equals 600.

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3 years ago

Write the slope-intercept form of the equation with the given point and slope. Through (2,5) and m=1/2

poizon [28]

Answer:

y=1/2x+4

Step-by-step explanation:

y-y1=m(x-x1)

y-5=1/2(x-2)

y=1/2x-2/2+5

y=1/2x-1+5

y=1/2x+4

Note that the slope-intercept form is y=mx+b where m=slope and b=y-intercept.

If you're satisfied with the answer, then please mark me as Brainliest. Thank you.

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2 years ago

For this graph, mark the statements that are true.

Gelneren [198K]

Answer:

C and D

Step-by-step explanation:

Given is the graph of the function with no restrictions.

The domain and range are all real numbers.

Correct options are C and D

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2 years ago

Read 2 more answers