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2 years ago

3 more than 3 times a number is equal to 12 less than 6 times the number. what is the number?

Mathematics

2 answers:

lorasvet [3.4K]2 years ago

5 0

Answer:

Step-by-step explanation:

Juliette [100K]2 years ago

5 0

Answer:

Step-by-step explanation:

3*5=15

15+3=18

and

6*5=30

30-12=18

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32) The cost of mailing a first-class letter is $.22 for the first ounce and $.17 for each additional ounce or fraction

masya89 [10]

Answer is $1.31
Step by step
We know total weight is 7.4 ounce
The first ounce is $.22
That leaves 6.4 ounces to pay for at $.17 per ounce
6.4 x .17 = 1.088 round to $1.09
Add $1.09 + $.22 = $1.31
You don’t have that choice listed

3 0

1 year ago

A ball is kicked with an initial height of 0.75 meters and initial upward velocity of 22 meters/second. this inequality represen

BARSIC [14]

Answer:

t is between 0.47 seconds and 4.02 seconds

Step-by-step explanation:

Given

$Inequality: -4.9t^2+22t+0.75>10$

Required

Determine the values of t

$-4.9t^2+22t+0.75>10$

Subtract 10 from both sides

$-4.9t^2+22t+0.75 - 10 >10 - 10$

$-4.9t^2+22t-9.25 >0$

Multiply through y -1

$4.9t^2-22t+9.25$

Solve t using quadratic formula:

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

Where

$a = 4.9$

$b = -22$

$c = 9.25$

So, we have:

$t = \frac{-(-22) \±\sqrt{(-22)^2 - 4*4.9*9.25}}{2 * 4.9}$

$t = \frac{22 \±\sqrt{484 - 181.3}}{9.8}$

$t = \frac{22 \±\sqrt{302.7}}{9.8}$

$t = \frac{22 \±17.40}{9.8}$

Split the equation

$t = \frac{22 + 17.40}{9.8}$ or $t = \frac{22 - 17.40}{9.8}$

$t = \frac{39.4}{9.8}$ or $t = \frac{4.6}{9.8}$

$t = 4.02$ or $t = 0.47$

Hence; the range is

$0.47 < t$

4 0

2 years ago

How do you find the slope in these two equations: 3x+7=-2 , -y-5=-9

wolverine [178]

3x+7= -2
+2. +2
0=3x+9
The slope is 3.
The slope formula is "y=mx+b" m equals the slope.

4 0

3 years ago

The ratio of customers who purchase items with coupons to customers who don't use coupons is 6 to 16. If 9 customers use coupons

Irina-Kira [14]

Answer:

24 customers will not use coupons.

Step-by-step explanation:

Number of customers who use coupons = 9

Number of customers who don't use coupons = x

Ratio of customers who use coupons to customers who don't use coupons = 6:16

$=\frac{6}{16}$

$\frac{9}{x}=\frac{6}{16}$

$x=\frac{9\times 16}{6}=24$

24 customers will not use coupons.

3 0

3 years ago

1/3x+y=4 solve the equation for y

faust18 [17]

Y= -1/3x + 4

This would make the equation in slope intercept form

3 0

2 years ago

Read 2 more answers