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77julia77 [94]
4 years ago
13

Solve the equation -4x=-40 x=

Mathematics
2 answers:
svet-max [94.6K]4 years ago
6 0

x=10

Step-by-step explanation:

10 times -4 is -40 since if you multiply a negative number by a positive you get a negative

mylen [45]4 years ago
6 0

Answer: x =10

Step-by-step explanation:

STEP ONE DIVIDE BOTH SIDES BY NEGATIVE 4

STEP 2 GET RID OF THE 4'S They cancel out

Step 3 your answer is 10 because negative divided by NEGATIVE equals a positive

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If the simple interest on ​$3,000 for 8 years is ​$1,680​, then what is the interest​ rate?
madam [21]

We need to use the formula for simple interest which is
I= prt
Where I is the amount of money you earned or pay in interest
p is the principal, the amount you deposited or borrowed
r is the interest rate expressed as a decimal
t is time in terms of years

In this problem, I= 1,680
p= 3000
t= 8
'. r is what we are looking for.

Substituting the numbers into the simple interest formula, we get
I=. p r t
1,680=(3000)(r)(8). Multiplying
1,680= 24,000r Divide both sides by 24,000
0.07= r
So, the percentage is (0.07)(100)= 7%...
8 0
3 years ago
17. Find the value of x and y
Margaret [11]

Answer:

X is 30

Y is 5

40=8y so solve for y

90-60=x

5 0
3 years ago
A drawing of a sailboat was made using a rectangle and two right triangles, as shown.
elixir [45]

Answer:

45 square centimeters

Step-by-step explanation:

we know that

The area of the figure is equal to the area pf a rectangle plus the area of two right triangles

so

A=(12)(2.5)+\frac{1}{2}(2)(6) +\frac{1}{2}(3)(6)

A=30+6+9=45\ cm^2

6 0
4 years ago
How you can use a table to find the unit rate in the example problem
Julli [10]

Answer:

YOUR WELCOME

Step-by-step explanation:

you simply measure or put the first number then a decimal then the other number or numbers

3 0
3 years ago
Write the equation of the line that passes through the points (-3,2) and (-1,6)
Dmitrij [34]

Answer:

y=2x+8

Step-by-step explanation:

An equation that is most suitible for this kind of problem is the slope intercept form with is y=mx+b.

m=slope

b=y-intercept

1: Find the slope

Use the formula y2-21/x2-x1

6-2/-1-(-3)=4/2=2

m=2

2: Find the y-intercept

For me personally, I think it is easiest to just graph the points, draw the line, then find where the line meets the y-axis.

b=8

<u>y=2x+8</u>

<em>Hope this helped! Brainliest would be awesome :)</em>

4 0
4 years ago
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