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4 years ago

64 percent of 75 tiles

Mathematics

1 answer:

Gnoma [55]4 years ago

3 0

64% × 75
⁶⁴/₁₀₀ × 75
¹⁶/₂₅ × 75
¹⁶/₁ × 3
16 × 3
48

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I need help please....

zhuklara [117]

The answer is C!!! I really hope that this helps you

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3 years ago

Solve. 8 - 2d = c 4c + 3d = 2 c=4 d = -6 C=-4 d = 6 C=4 d = 6 C=-4 d = -6

dlinn [17]

Answer:

c = -4 d = 6

Step-by-step explanation:

8 - 2d = c 4c + 3d = 2

4(8 - 2d) + 3d = 2

32 - 8d + 3d = 2

32 - 5d = 2

-5d = -30

d = 6

8 - 2(6) = c

8 - 12 = -4 = c

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3 years ago

5.Find the roots of the parabola given by the following equation.

snow_tiger [21]

Answer:

Part 5) The roots are x=-3 and x=1.5

Part 6) The solution on a number line is the shading area below of the line y=-1/3 (close circle)

Step-by-step explanation:

Part 5) Find the roots of the parabola given by the following equation

$2x^{2} +5x-9=2x$

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^{2}+5x-2x-9=0$

$2x^{2}+3x-9=0$

$a=2\\b=3\\c=-9$

substitute in the formula

$x=\frac{-3(+/-)\sqrt{3^{2}-4(2)(-9)}} {2(2)}$

$x=\frac{-3(+/-)\sqrt{81}} {4}$

$x=\frac{-3(+/-)9} {4}$

$x=\frac{-3(+)9} {4}=1.5$

$x=\frac{-3(-)9} {4}=-3$

therefore

The roots are x=-3 and x=1.5

Part 6) Solve the inequality and graph the solution on a number line.

$-3(5y-4)\geq 17$

Solve for y

$-15y+12\geq 17$

Subtract 12 both sides

$-15y\geq 17-12$

$-15y\geq 5$

Multiply by -1 both sides

$15y\leq -5$

Divide by 15 both sides

$y\leq -1/3$

The solution is the interval -----> (-∞, -1/3]

All real numbers less than or equal to negative one third

The solution on a number line is the shading area below of the line y=-1/3 (close circle)

The graph in the attached figure

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3 years ago

ANSWER IF YOU KNOW THE ANSWER!!! I WILL GIVE BRAINLIEST BTW!!!!!!!!!!!!!

AURORKA [14]

im pretty sure its c

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3 years ago

Read 2 more answers

Classify the polygon. Then determine whether it appears to be regular or not regular. A. stargon; regular B. hexagon; not regula

mr_godi [17]

The answer to the question is c

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4 years ago