All categories

3 years ago

Solve 7d + d - 4d - 7 - 5d

2 answers:

8 0

1, Simplify 7d+d-4d-77d+d−4d−7 to 4d-74d−7

4d-7=5d4d−7=5d

2.Subtract 4d4d from both sides
-7=5d-4d−7=5d−4d

3. Simplify 5d-4d5d−4d to dd
-7=d−7=d

4. Switch sides
d=-7d=−7
5. so your answer would be -7

Butoxors [25]3 years ago

6 0

-1d-7 is the answer I'm pretty sure

You might be interested in

So I solved this problem already but I have to explain how I solved it but I used Photomath so how would you explain how you sol

yan [13]

Answer:

Remove parentheses.

y-10=-3\times -2y−10=−3×−2

2 Simplify 3\times -23×−2 to -6−6.

y-10=-(-6)y−10=−(−6)

3 Remove parentheses.

y-10=6y−10=6

4 Add 1010 to both sides.

y=6+10y=6+10

5 Simplify 6+106+10 to 1616.

y=16y=16

6 0

2 years ago

Which recursive formula can be used to generate the sequence below, where f(1) = 3 and n ≥ 1? 3, –6, 12, –24, 48, … f (n + 1) =

tatuchka [14]

Which recursive formula can be used to generate the sequence below, where f(1) = 3 and n ≥ 1?

3, –6, 12, –24, 48

The recursive formula for this sequence is

f (n + 1) = –2 f(n)

at n=1 f(n)= 3

at n = 2

f(2) = -2 (3) = -6

n = 3

f(3) = -2 (-6) = 12 and so on

8 0

2 years ago

Read 2 more answers

A frustum is made by removing a small cone from a similar large cone in the diagram shown the height of a small cone is a quarte

lesantik [10]

Answer:

Volume of the frustum = ⅓πh(4R² - r²)

Step-by-step explanation:

We are to determine the volume of the frustum.

Find attached the diagram obtained from the given information.

Let height of small cone = h

height of the large cone = H

The height of a small cone is a quarter of the height of the large cone:

h = ¼×H

H = 4h

Volume of the frustum = volume of the large cone - volume of small cone

volume of the large cone = ⅓πR²H

= ⅓πR²(4h) = 4/3 ×π×R²h

volume of small cone = ⅓πr²h

Volume of the frustum = 4/3 ×π×R²h - ⅓πr²h

Volume of the frustum = ⅓(4π×R²h - πr²h)

Volume of the frustum = ⅓πh(4R² - r²)

6 0

3 years ago

The area of a rectangle is 216 square inches. If the perimeter is 60 inches, find the length and width of the rectangle

mojhsa [17]

A=Lw

P=2L+2w

216=Lw

W=216/L...substitute to Perimeter equation

60=2L+2(216/L)

60L=2L^2 + 432

2L^2-60L+432=0

2(L^2 - 30L + 216)=0

2(L-18)(L-12)=0

L=12, W=18 or L=18, W=12

3 0

3 years ago

Write the trinomial as a square of a binomial or as an expression opposite to a square of a binomial -42a+9a^2+49

Degger [83]

9(a^2+14/3)^2-14/3+49

9(a^2+14/3)^2+7

6 0

2 years ago