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3 years ago

HELP PLEASE !

Mathematics

1 answer:

olchik [2.2K]3 years ago

7 0

Answer:

b=2

Step-by-step explanation:

Changing the y-intercept would move the graph down or up.

So we have the equation $y=\frac{-2}{3}x+5$ .

We want to move the graph down 3 units. We want the y-intercept to be 3 units lower than what is was. Since 5-3 is 2, then the new y-intercept is 2.

The equation would then be $y=\frac{-2}{3}x+2$ .

So b=2.

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Using the quadratic formula to solve 2x2=4x-7 , what are the values of x?

Firdavs [7]

Answer: no solution

Step-by-step explanation:

2x2=4x-7

4x=4x−7

0=−7

Since 0=−7 is false, the answer is no solution.

8 0

3 years ago

The difference of 6 and the square of a number.<br><br> help plzz

miskamm [114]

Answer:

the difference is -6

Step-by-step explanation:

number=6

square=2x

2x-6

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3 years ago

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1/3 cup of flour is used to make 5 dinner rolls.

RoseWind [281]

we know that

$\frac{1}{3}$ cup of flour is used to make $5$ dinner rolls.

Part a) How much flour is needed to make one dinner roll?

by using proportion

$\frac{\frac{1}{3}}{5} =\frac{x}{1} \\ \\ x=\frac{\frac{1}{3}}{5}\\ \\ x=\frac{1}{15}$

therefore

the answer Part a) is

To make one dinner roll is needed $\frac{1}{15}$ cup of flour

Part b) How many cups of flour are needed to make 3 dozen dinner rolls?

Multiply the value obtained in part a) by $36$

$\frac{1}{15} *36=\frac{36}{15} \\ \\ =\frac{12}{5}$

$\frac{12}{5} =2\frac{2}{5}$

therefore

the answer Part b) is

To make $3$ dozen dinner rolls are needed $2\frac{2}{5}$ cup of flour

Part c) How many rolls can you make with 5 2/3 cups of flour?

$5\frac{2}{3} =\frac{17}{3}$

by using proportion

$\frac{\frac{1}{3}}{5} =\frac{\frac{17}{3}}{x} \\ \\ \frac{x}{3} =\frac{85}{3} \\ \\ x=85$

therefore

the answer part c) is

$85$ rolls

6 0

3 years ago

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Use the substitution method to solve the system of equations. Choose the

luda_lava [24]

Answer:

(2, 22 )

Step-by-step explanation:

Given the 2 equations

y = 7x + 8 → (1)

y = x + 20 → (2)

Substitute y = 7x + 8 into (2)

7x + 8 = x + 20 ( subtract x from both sides )

6x + 8 = 20 ( subtract 8 from both sides )

6x = 12 ( divide both sides by 6 )

x = 2

Substitute x = 2 in (2) for corresponding value of y

y = x + 20 = 2 + 20 = 22

Solution is (2, 22 )

7 0

3 years ago

Will give brainliest please help ASAP

12345 [234]

✿ Domain is the Set of Values of x

⇒ Domain = { 10 , 15 , 19 , 32 }

✿ Range is the Set of Values of y (Images of x)

⇒ Range = { -1 , 5 , 9 }

First Option is the Answer

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3 years ago

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