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3 years ago

Does (-3, -7) make the equation y = 4x + 5 true?

Mathematics

1 answer:

choli [55]3 years ago

5 0

Answer: Yes. True

Step-by-step explanation:

In (-3, -7) , -3 is x and -7 is y.

Now, put those values in the equation.

y = 4x + 5

-7 = (4×-3)+5

-7 = -12 + 5

-7 = -7, which is true

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6yjjuiyh try orhfhi

joja [24]

Answer:

umm?

Step-by-step explanation:

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2 years ago

HELPPPP PLZZ ND THANK YOU SOO MUCH

swat32

Answer:

50, 40, 30, 250, 350

Step-by-step explanation:

1/2 = 0.5, 0.5 x 100 = 50 (0.5 -> 5 -> 50)

2/5 = 0.4 (10 / 5 [the denominator] = 2, 0.2 x 2 [the numerator] = 0.4), 0.4 x 100 = 40 (0.4 -> 4 -> 40)

3/10 = (10 / 10 [the denominator] = 1, 0.1 x 3 [the numerator] = 0.3), 0.3 x 100 = 30 (0.3 -> 3 -> 30)

5/2 = 2.5 (2 1/2), 2.5 x 100 = 250 (2.5 -> 25 -> 250)

7/2 = 3.5 (3 1/2), 3.5 x 100 = 350 (3.5 -> 35 -> 350)

Note: I'm not sure if I understand the question completely, but I changed the fraction into a decimal and multiplied it by 100. Not sure what it means by "Divide fraction".

3 0

2 years ago

X to the second power + 6x - 7 = 0

velikii [3]

X can equal -7 or 1
X = -7 and 1

6 0

3 years ago

If a 12 cm altitude to the hypotenuse of a right triangle divides the hypotenuse into segments with ratio 3:2, what is the lengt

tiny-mole [99]

Answer:

The length of hypotenuse is $10\sqrt{6}$ cm

Step-by-step explanation:

Let's length of hypotenuse is x

Since, a 12 cm altitude to the hypotenuse of a right triangle divides the hypotenuse into segments with ratio 3:2

so,

First part of hypotenuse length is

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

Second part of hypotenuse length is

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

now, we can draw triangle

We can see that

triangles ABD and ABC are similar

so, the ratio of their sides must be equal

$\frac{\frac{3x}{5} }{12}=\frac{12}{\frac{2x}{5}}$

now, we can solve for x

$\frac{3x}{5}\times\frac{2x}{5}=144$

$6x^2=3600$

$x=10\sqrt{6}$

So,

The length of hypotenuse is $10\sqrt{6}$ cm

3 0

3 years ago

Rewrite as a simplified fraction. 0.83 =?

Mashutka [201]

Answer:

83/100

Step-by-step explanation:

Hope this helps you out!

Welcome to Brainly!

~theLocoCoco

6 0

2 years ago

Read 2 more answers