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3 years ago

Complete the missing value in the solution to the equation. y = 3x - 7

Mathematics

2 answers:

klemol [59]3 years ago

8 0

Y = 3x -7
+7 +7
y= 10x

Pavlova-9 [17]3 years ago

4 0

Y=3x-7

Y=3•1-7

Y=3-7

Y=-4

Answer:

(1,-4)

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What fraction of 2minutes is 6 seconds

Olin [163]

1 minute = 60 seconds

2 minutes = 60 x 2 = 120 seconds

Fraction = 6/120 reduces to 1/20

The answer is 1/20

5 0

4 years ago

Read 2 more answers

-10-|1+4b|=-19 Y = 0

alexandr402 [8]

Answer:

b=2 or b=-2.5

Step-by-step explanation:

We solve absolute value equations the same as any other equation using inverse operations. However, the inverse operation for absolute value requires one special condition. Since absolute values change a number to a positive regardless if it has a negative sign, we have two possible answers. When we have the absolute value operation isolated, we will set it equal to both the negative and positive option.

$-10-|1+4b|=-19\\-10+10-|1+4b|=-19+10\\-|1+4b|=-9\\\frac{-|1+4b|}{-1} =\frac{-9}{-1} \\|1+4b|=9$

We now have the absolute value isolated. We will set it equal to both 9 and -9.

$1+4b=9\\1-1+4b=9-1\\4b=8\\b=2$

and

$1+4b=-9\\1-1+4b=-9-1\\4b=-10\\b=\frac{-10}{4}=\frac{-5}{2}= -2.5$

3 0

4 years ago

Nadia made 4 loaves of bread. she used 3/8 teaspoon of baking soda for each loaf.how many teaspoon of bvakingsoda Nadia used alt

daser333 [38]

For every loaf of bread she uses 3/8 teaspoons. She makes 4 loaves of bread.
3/8*4 = 12/8 = 3/2 = 1.5 teaspoons

3 0

3 years ago

Jada's sister works in a furniture store.

Bingel [31]

Answer:

1) $16.35

2) 75%

3) $245

Step-by-step explanation:

1) Jada earns = $15 per hour

9% increase = 15 * 9/100 = $1.35

Increased Jada's pay = 15+1.35 = $16.35

2) Markup = selling price - cost= $350 - 200= $150

Markup % = $\frac{sale price - cost }{cost}*100$ \

= $\frac{150}{200}*100$ = 75%

3) Jada's sister commission is 3.5% of $7000

= $\frac{3.5}{100}* 7000$

= $245

5 0

3 years ago

A scooter travels 18 miles in the same time a bike covers 8 miles. If the rate of the scooter is two miles per hour than twice t

blsea [12.9K]

ANSWER:

A scooter travels 18 miles in the same time a bike covers 8 miles.The rates of both scooter and bike are 8 miles per hour and 18 miles per hour

SOLUTION:

Given, a scooter travels 18 miles in the same time a bike covers 8 miles.

The rate of the scooter is two miles per hour than twice the rate of the bike

We need to find both rates of scooter and bike.

Let the speed of scooter be x and speed of bike be y.

And, time taken to travel be t.

Then, for scooter:

$\bold{distance = speed \times time}$

$18 = x \times t$

$t=\frac{18}{x}$ --- (1)

For bike:

$\bold{distance = speed \times time}$

$8=y \times t$

$\mathrm{t}=\frac{8}{y}$ --- (2)

Now, equate both (1) and (2)

$\frac{18}{x}=\frac{8}{y}$

On cross-multiplication we get

18y = 8x

4x – 9y = 0 ---- (3)

We also know that, rate of the scooter is two miles per hour than twice the rate of the bike.

x = 2 + 2y ---- (4)

Now substitute (4) in (3)

4(2 + 2y) – 9y = 0

8 + 8y – 9y = 0

9y – 8y = 8

y = 8.

Again substitute y value in (4)

x = 2 + 2(8) = 2 + 16

x = 18.

Hence, the rates of both scooter and bike are 8 and 18 miles per hour

8 0

4 years ago

Complete the missing value in the solution to the equation. ​ y = 3x - 7

Complete the missing value in the solution to the equation. y = 3x - 7