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2 years ago

PLS HELP WITH EIGHTH GRADE ALGEBRA

Mathematics

2 answers:

Katyanochek1 [597]2 years ago

8 0

Answer:

i think its -13/10

Step-by-step explanation:

Natasha_Volkova [10]2 years ago

7 0

Answer:

-13/10

Step-by-step explanation:

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What is the percent notation for 8/10

nata0808 [166]

80% is your correct answer

7 0

2 years ago

Plot point C(2,7). If M is the midpoint of CD , what are the coordinates of D?

Y_Kistochka [10]

Answer:

The coordinates of D is (-4,-9)

Step-by-step explanation:

Given

C = (2,7)

M=(-1,-1) ----- Missing part of question

Required

Determine the coordinates of D

Let the coordinates of D be (x₂,y₂)

We'll solve this question using mid point formula;

$M(x,y) = (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Where

$C(x_1,y_1) = (2,7)$ and $M(x,y) = (-1,-1)$

Put these values in the formula

$(-1,-1) = (\frac{2+x_2}{2},\frac{7+y_2}{2})$

By comparison;

$-1 = \frac{2+x_2}{2}$ and $-1 = \frac{7+y_2}{2}$

$-1 = \frac{2+x_2}{2}$

Multiply both sides by 2

$-2 = 2 + x_2$

Subtract 2 from both sides

$-2 -2 = x_2$

$x_2 = -4$

$-1 = \frac{7+y_2}{2}$

Multiply both sides by 2

$-2 = 7 + y_2$

Subtract 7 from both sides

$-2 - 7 = y_2$

$y_2 = -9$

Hence, the coordinates of D is (-4,-9)

4 0

3 years ago

you deposit 1,750 into an interestmemt account that will produce 6.05% annual interest the money was left in the account for 2 y

Ymorist [56]

Answer:

i dont know mabey someone else knows

5 0

2 years ago

the value y varies directly with x. which function represents the relationship between x and y if y=20/3 when x=30?

joja [24]

If y varies directly with x, means that they can be modeled by a linear equation, lets choose a line with 0 y intercept, that is:
y = mx + b
y = mx
where m is the slope of the line, now we plug in the data we have:
y = mx
20/3 = m(30)
solving for m:
m = (20/3)(1/30)
m = 20/90
m = 2/9
so the line equation, or function modeling the y and x relationship is:
y = (2/9)x

6 0

2 years ago

Help which is the point slope

Advocard [28]

Its the second one

Point slope formula is:
Y - (y1) = m ( x - (x1) )

M is the slope so -5/7

( 6 is (x1) , 2 is (y1) )

Y-2=-5/7(x-6)

4 0

2 years ago