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2 years ago

Rewrite the expression without parentheses. 13m−(-8m-5)

Mathematics

1 answer:

soldier1979 [14.2K]2 years ago

6 0

Answer:

21m+5

Step-by-step explanation:

13m-(-8m-5)

13m+8m+5

21m+5

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Divide $800 between kofi and kweku so that kofi gets three times what kweku gets

AfilCa [17]

Answer:

600 and 200

Step-by-step explanation:

kofi : kweku is 3 :1

so Kofi gets 3 out of ( 3 +1) = 3/4 of 800 = 3/4 * 800 = 600

kweku get s the rest 800- 600 = 200

6 0

1 year ago

Write an equivalent expression d+d+d+e+e+e?<br>please help

pantera1 [17]

Without context, d^3 + e^3 is equal to the equation you just showed.

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3 years ago

Subtract the cube root of the product of x and 3y from the square of the sum of a and b.

rosijanka [135]

Answer:

a^2 + b^2 + 2ab - (3xy)^1/3

Step-by-step explanation:

Here we want to make a subtraction

Cube root of the product of x and 3y

x * 3y = 3xy

Cube root of this;

(3xy)^1/3

The sum of a and b is (a + b)

Square of this sum;

(a + b)^2 = a^2 + 2ab + b^2

Now, subtract the cube root

we have;

a^2 + b^2 + 2ab - (3xy)^1/3

7 0

2 years ago

On the scale drawing of a car, the length from bumper to bumper is 6 inches. The car’s actual length, from bumper to bumper, is

dimulka [17.4K]

Answer:

3/8 in/ft
1/32 . . . (pure number, no units)

Step-by-step explanation:

The ratio can be expressed directly as ...

... (6 in)/(16 ft) = 3/8 in/ft

This can be read or used in different ways:

3/8 in = 1 ft
3 in = 8 ft

Or, the units can be made compatible and the ratio expressed as a pure number.

... (1/2 ft)/(16 ft) = (1/32) ft/ft = 1/32

This means whatever measurement is made on the model, the actual vehicle measurement is 32 times that.

4 0

4 years ago

Base of triangle exceeds the height by 4. If the area is 178.5 square inches, find the length of the base and the height of the

xxMikexx [17]

Area of a triangle:
A= (1/2)(bh)

In this problem we are given:
A= 178.5 $in^{2}$
b= h+4 in
h= UNKNOWN ("h")

Plug in our values into the area equation and solve for "h":
$A= \frac{1}{2} bh$
$178.5 = \frac{1}{2} ((h+4)h)$ (multiply each side by 2 to get rid of the 1/2)
$357 = ((h+4)h)$
$357 = h^{2} +4h$
$0= h^{2} +4h -357$
(357/21=17)
$0= (h+21)(h-17)$ (solve both inequalities separately)

$0= (h+21)$
$-21= h$ ( a negative height is not possible so, this answer is incorrect.)

$0=(h-17)$
$h=17 in$

Answer: base = (h+4)= (17+ 4) b= 21 in h= 17in

Please comment with any further questions! :)

5 0

3 years ago

Rewrite the expression without parentheses. 13m−​(-8​m-5)

Rewrite the expression without parentheses. 13m−(-8m-5)