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3 years ago

Add.

Mathematics

2 answers:

Hoochie [10]3 years ago

7 0

You add each number that is in the same position correlated to the box. Ex: 12+-3=9

QveST [7]3 years ago

5 0

Do what is in parentheses first then add them together

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8.5=w-12<br>these is one step Equation

rodikova [14]

Answer:

8.5= w -12 (add 12 to both sides)

20.5= w

Step-by-step explanation:

7 0

3 years ago

How do i do this question?

zysi [14]

The length of BC = 72

Solution:

Given ΔABC and ΔDEF are similar triangles.

ΔABC $\sim$ ΔDEF

AB = 54, BC = n, EF = 12, DE = 9

Similar triangle theorem:

If two triangles are similar then the corresponding sides are proportional to each other.

$$\Rightarrow\frac{BC}{EF}=\frac{AB}{DE}$

Substitute the given values, we get

$$\Rightarrow\frac{n}{12}=\frac{54}{9}$

Do cross multiplication.

$$\Rightarrow9\times n=54\times12$

Divide both sides of the equation by 9.

$$\Rightarrow n=\frac{54\times12}{9}$

$$\Rightarrow n=6\times12$

$$\Rightarrow n=72$

⇒ BC = 72

Option B is the correct answer.

The length of BC = 72.

4 0

4 years ago

the formula y-y=m(x-x) is the point -slope from of the equation of a line where m is the slope of the line and (x,y) and ( x,y)

hodyreva [135]

(4,-2)(5,0)
slope(m) = (0 - (-2) / (5 - 4) = 2/1 = 2
there is going to be 2 possible answers...

y - y1 = m(x - x1)
now we sub

using points (4,-2)..... y -(-2) = 2(x - 4) =
y + 2 = 2(x - 4) <==

using points (5,0)....y - 0 = 2(x - 5) <==

8 0

3 years ago

Can anyone help? i dont fully understand this

IgorC [24]

Answer:

It would be about 1/4

Step-by-step explanation:

8 0

2 years ago

Write the equation in point-slope form. (4,-2) ; m=1/2

andreev551 [17]

$\text{Given that,}\\\\(x_1,y_1) = (4,-2)~~ \text{and slope,}~ m =\dfrac 12\\\\\text{Point - slope form,}\\\\y-y_1 = m(x-x_1)\\\\\implies y -(-2) = \dfrac 12(x-4)\\\\\implies y+2=\dfrac 12(x-4)$

8 0

3 years ago

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