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3 years ago

Use the direct variation equation y = 22x to find x when y = 88.

Mathematics

2 answers:

tekilochka [14]3 years ago

6 0

When simplifying both sides of the equation I got x=4.

gogolik [260]3 years ago

5 0

88 divided by 2 = 44 divide2= 22 so x=2

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— 3х + 7 < 19 ?<br> Help plz

Maksim231197 [3]

Answer:

x > -4

Step-by-step explanation:

— 3х + 7 < 19

Subtract 7 from each side

— 3х + 7-7 < 19-7

-3x < 12

Divide each side by -3, remembering to flip the inequality

-3x/-3 > 12/-3

x > -4

6 0

3 years ago

Read 2 more answers

Suppose y varies directly as x, and y = 21 when x = 3. Find x when y = 42.

nata0808 [166]

Answer:

x = 24

Step-by-step explanation:

y₂ - y₁

42 - 21 = 21

x + 21

3 + 21 = 24

So when y increases by 21, so does x.

x = 24

7 0

3 years ago

What is a coefficient ?

Ahat [919]

A coefficient is a number that is attached to a term.

For example:

3x² - 5x + 6 = 0

The coefficient of x² is 3.

The coefficient of x = -5.

Hope this explains it.

8 0

3 years ago

Two different floor plans are being offered in a new housing development. Several prospective buyers from three different age gr

zepelin [54]

Answer:

0.677

Step-by-step explanation:Add up the values in the plan A column. There are 10+12+16 = 38 people who prefer plan A.

Add up the values in the "40-49" row to find that 16+8 = 24 people are ages 40 to 49.

We have 38+24-16 = 46 people who either prefer plan A, are aged 40-49, or fit both descriptions. I subtracted off 16 because those 16 people were counted twice when adding 38 and 24.

An alternative way to get this value of 46 is to add up everything that is in column1 or row 3 (or both). So that would get 10+12+16+8 = 46.

Now add up everything in the table to find out how many people were surveyed total. That would be 10+7+12+15+16+8 = 68 people overall.

The probability of someone liking plan A, or being age 40-49, or both is 46/68 = 0.6765 approximately. Rounding to 3 decimal places gives 0.677

3 0

3 years ago

A bank charges 1.75 of a point for the origination fee on a mortgage of $400,000. What is the origination fee?

Marina86 [1]

Answer:

The origination fee on a mortgage of $400,000 is $7,000.

Step-by-step explanation:

Here, the mortgage value = $400,000

The origination fee = 1.75%

Now, the origination fee is calculated on the amount mortgaged.

⇒ 1.75 % of ($400,00) = Origination Fee

Now, 1.75 % of ($400,00) = $\frac{1.75}{100} \times 400,000 = 7,000$

or, 1.75 % of ($400,00) = $ 7,000

Hence, the origination fee on a mortgage of $400,000 is $7,000.

4 0

4 years ago