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3 years ago

PlZZZZ HELPP ANSWER IT CORRECTLY FOR 70points!!!

Mathematics

1 answer:

Archy [21]3 years ago

7 0

Answer:

not inglish woooooooooooooooooo

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I need help plz help

VashaNatasha [74]

twice as many cats (as) dogs.

c = 2d [not true]

Three less than twice as many cats (as) dogs.

c = 2d - 3

210 combined,

c + d = 210

Subtracting,

-d = 2d - 3 - 210

-3d = -213

d = 71

Answer: 71

7 0

3 years ago

8.46 If 100 is decreased by a% and the result is decreased by b%, then what is the total percent decrease (in terms of a and b)?

Marysya12 [62]

Answer:

The total percent decrease is $a+b-\frac{a b}{100}$

Step-by-step explanation:

We are given with a word problem
We are asked to find the total percentage decrease
We can do this in two steps

Step 1: Finding the two percentage decrease

Step 2: Finding their difference

Step 1 of 2

Let the decrease by a% be 100-a

Then b% decrease is

$\begin{aligned}\frac{b}{100} \times(100-a) &=\frac{100 b-a b}{100} \\\frac{100 b}{100}-\frac{a b}{100} &=b-\frac{a b}{100}\end{aligned}$

Step 2 of 2

The percentage difference between the two percentages is,

$\begin{aligned}&(100-a)-\left(b-\frac{a b}{100}\right)=100-a-b+\frac{a b}{100} \\&100-a-b+\frac{a b}{100}=100-\left(a+b-\frac{a b}{100}\right)\end{aligned}$

Since 100 is the total percent $a+b-\frac{a b}{100}$ is the percentage decrease.

3 0

2 years ago

Steven is driving to Texas pulling a 12 ft. boat. If he drives 150 miles in

ziro4ka [17]

Answer: 975

Step-by-step explanation:

Because you multiply 6 times 150 and then you add 75 because that is half of 150 and you only need one more mile

6 0

3 years ago

Breakfast at the local cafe costs Harry $38.70 without taxes. He wants to leave a 15 percent tip. How much should he tip?

goldfiish [28.3K]

To find 15% of something, you would multiply 0.15 by the number you are trying to find 15% of.

4 0

3 years ago

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What is the perimeter of this polygon? Round your answer to the nearest<br> tenth

bulgar [2K]

Answer:

Step-by-step explanation:

pythagorean theorem

A^2+B^2=C^2 do that for all sides then add

6 0

3 years ago

Read 2 more answers