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3 years ago

Help me please? Giving out brainliest!!

Mathematics

1 answer:

cluponka [151]3 years ago

7 0

Answer:

Step-by-step explanation:

.89 per pound

3.2 pounds

.89*3.2 = 2.85

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Is the LMC of a pair of numbers ever less than both numbers? (answer quick please)

erma4kov [3.2K]

The usual definition of Least Common Multiple of two numbers states that is the Least positive integer that can be evenly divided by both numbers. The way it is usually defined the two numbers must be positive integers

5 0

3 years ago

In ΔPQR, the measure of ∠R=90°, QR = 8 feet, and RP = 3.9 feet. Find the measure of ∠P to the nearest degree.

Kipish [7]

Answer:

64°

Step-by-step explanation:

Check the attachment for the diagram. Since the triangle has one of its angle as 90°, it is a right angled triangle.

Using the SOH CAH TOA trigonometry ratios:

Since ∠P is opposite to side QR,

QR = opposite side = 8ft

RP = adjacent side = 3.9ft

According to TOA

Tan∠P = Opposite/Adjacent = QR/RP

Tan∠P = 8/3.9

Tan∠P = 2.05

∠P = arctan 2.051

∠P = 64°

3 0

3 years ago

12s 7s4 9s s2 5 5s4 2 identify like terms

guapka [62]

The like terms are all the ones with the same variable/ letter

4 0

3 years ago

I need help please somebody answer ASAP please I’d highly appreciate it

ss7ja [257]

Answer:

2.(b) w= 3

3. x= -3 or x= 3

Step-by-step explanation:

2.(b) <u>Method 1:</u>

$\frac{2w - 1}{5} + w + 2 = 2w \\ \frac{2w - 1}{5} = 2w - w - 2 \\$

Simplify:

$\frac{2w - 1}{5} = w - 2$

×5 on both sides:

$2w - 1 = 5(w - 2)$

Expand:

$2w - 1 = 5w - 10$

Bring constants to 1 side, w terms to the other:

$5w - 2w = 10 - 1$

Simplify:

$3w = 9$

Divide both sides by 3:

$w = 9 \div 3 \\ w = 3$

<u>Method 2:</u>

$\frac{2w - 1}{5} + w + 2 = 2w$

Multiply by 5 throughout:

$2w - 1 + 5(w + 2) = 5(2w)$

Expand:

$2w - 1 + 5w + 10 = 4w$

Simplify:

$7w - 9 = 4w$

+9 on both sides:

$7w = 4w + 9$

-4w on both sides:

$7w - 4w = 9$

Simplify:

$3w = 9$

Divide by 3 on both sides:

$w = 3$

3. $\frac{6x - 12}{3} + 4 = \frac{18}{x}$

Multiply by 3x on both sides:

$\frac{3x(6x - 12)}{3} + 3x(4) = \frac{3x(18)}{x} \\ x(6x - 12) + 12x = 3(18)$

Expand:

$x(6x) - x(12) + 12x = 54 \\ 6x^{2} - 12x + 12x = 54 \\$

Simplify:

$6 {x}^{2} = 54$

Divide by 6 on both sides:

${x}^{2} = 9$

-9 on both sides:

${x}^{2} - 9 = 0$

Factorise:

*Since a²-b²= (a +b)(a -b),

${x}^{2} - {3}^{2} = 0 \\ (x + 3)(x - 3) = 0$

Thus,

x +3= 0 or x -3= 0

x= -3 or x= 3

8 0

3 years ago

Read 2 more answers

Surface area and volume

Wittaler [7]

Triangular prism
length of slanted side:
sqrt(3^2 + 4^2) = 5
SA = 2(1/2)(8)(3) + 8(12) + 2(5)(12) =240
V = (1/2)(8)(3)(12) = 144

cuboid
SA = 2(7x6) + 2(7x5) + 2(6x5) = 214
V = 7x6x5 = 210

6 0

3 years ago