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4 years ago

Eight is thirteen more than three times a number. Write as an algebraic expression

Mathematics

1 answer:

svp [43]4 years ago

7 0

Answer: 3x + 13 = 8

Step-by-step explanation: If u multiply the number by 3 and add 13, the answer would be 8

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Kofi and Kojo were given 380 cedis to share, Kojo had 15 cedis more than Kofi. If Kofi's share is x, find an expression for Kojo

WARRIOR [948]

Answer:

kojo = x + 15

kofi = $182.50

kojo = $197.50

Step-by-step explanation:

kofi = x

kojo = x + 15 (since Kojo h as 15 cedis more than Kofi)

380= x + 15 + x

2x + 15 = 380

combine like terms

2x = 380 - 15

2x = 365

x = 182.50

Kojo = 15 + 182.50 = $197.50

3 0

3 years ago

Find the surface area of the cylinder formed by the net. Use 3.14 for π.

sineoko [7]

Answer:

138.16 square feet

Step-by-step explanation:

The surface area of the cylinder consists of one rectangle and two circles.

1. The radius of the circle is 4 ft, then the area of the circle is

$A_{circle}=\pi r^2 =\pi \cdot 4^2 =16\pi \ ft^2$

2. The width of the rectangle is 1.5 ft, the length of the rectangle is the circumference of the circle.

Find the circumference:

$C=2\pi r=2\pi \cdot 4=8\pi \ ft$

Hence,

$A_{rectangle}=1.5\cdot 8\pi =12\pi \ ft^2$

3. The surface area of the cylinder is

$SA=2A_{circle}+A_{rectangle}=\\ \\=2\cdot 16\pi +12\pi =32\pi +12\pi =44\pi \approx \\ \\\approx 44\cdot 3.14=138.16\ ft^2$

8 0

3 years ago

What is the value of y to the nearest tenth?<br><br> Please add steps!!

alexandr402 [8]

Answer:

8.9

Step-by-step explanation:

5 0

3 years ago

To practice for a competition, George swam 720 meters in the pool each day for 2 weeks. How many kilometers did George swim in t

Mekhanik [1.2K]

10,080,000 (because 720×14, the total number of days he swam in two weeks, is 10,080 and then you divide it by .001, the number of kilometers in one meter, which gives you 10,080,00.)

6 0

3 years ago

Read 2 more answers

suppose that x and y very inversely and that y=8/3 when x =8, write a function that models the inverse variation and find y when

Digiron [165]

First find the constant k. For inverse variation, k=yx.
k=(8/3)*3=8
8=yx or y=8/x
8=4y
y=2
Hope this helps.

5 0

3 years ago