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2 years ago

If x = 4, y = 2, and z = 10, evaluate the following expression: yz(x + y) – x? Enter

Mathematics

2 answers:

IrinaVladis [17]2 years ago

5 0

Answer:

y*z = 20

20(x + y) = )80 + 40) -x2

120 - 16 = 104

Step-by-step explanation:

Vesnalui [34]2 years ago

4 0

Answer:

104

Step-by-step explanation:

yz(x + y) - x² when x = 4, y = 2, z = 10

~Substitute

(2)(10)(4 + 2) - 4²

~Simplify

20(6) - 16

~Multiply

120 - 16

~Subtract

104

Best of Luck!

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Please helppppp pls it's in the screenshot

sergey [27]

Answer:

4. 11/6, 121/36

5. 5/8, 25/64

6. 4/7, 16/49

7. 14/9, 196/81

Step-by-step explanation:

The ratio of perimeters is the same as the ratio of corresponding legs:

perimeter ratio = red leg/blue leg

The area ratio is the square of that:

area ratio = (perimeter ratio)²

perimeter ratio = 11/6

area ratio = (11/6)² = 121/36

perimeter ratio = 5/8

area ratio = (5/8)² = 25/64

perimeter ratio = 4/7

area ratio = (4/7)² = 16/49

perimeter ratio = 14/9

area ratio = (14/9)² = 196/81

3 0

2 years ago

2 taps A and B can fill a swimming pool in 3 hours. If turned on alone, it takes tap A 5 hours less than tap B to fill the same

vazorg [7]

Answer:

Tap A will take 2 hours and tap B will take 6 hours to fill the tank when turned on alone.

Step-by-step explanation:

Let tap B fills the pool alone in the time = x hours

So in one hour part of pool will be filled = $\frac{1}{x}$

Another tap A when turned on, it takes time to fill the pool = x-5 hours

So in one hour part of the same pool filled = $\frac{1}{x-5}$

Now both the taps A and B are turned on then time taken to fill the pool = 3 hours.

Part of the pool filled in one hour by both the taps = $\frac{1}{3}$

Now we form an equation

Part of pool filled in one hour by tap A + Part of pool filled in one hour by tap B = Part of pool filled in one hour by both the taps when turned on

$\frac{1}{(x-5)}+\frac{1}{x}=\frac{1}{3}$

$\frac{x-5+1}{x(x-5)}=\frac{1}{3}$

$\frac{x-4}{x(x-5)}=\frac{1}{3}$

3(x - 4) = x(x - 5)

x² -5x = 3x - 12

x² - 8x + 12 = 0

x² - 6x - 2x + 12 = 0

x(x - 6) - 2(x - 6) = 0

(x -2)(x - 6) = 0

x = 2, 6 hours

We will take higher value of x as x = 6 hours for tap B.

Time taken by tap A = 6 - 4 = 2 hours.

Therefore, Tap A will take 2 hours and tap B will take 6 hours to fill the tank when turned on alone.

4 0

3 years ago

Find the measure of the missing angles. WILL GIVE BRAINLIEST

Ivahew [28]

D = 90
This is because any line is equal to 180 degrees, we see that d is situated on a line that continues into another angle, the other angle is 90 degrees, so we minus 90 from 180, to get 90.

E = 99
E is situated on a line with the other angle F, F = 81 (see below) so we minus 81 from 180

F = 81
F is situated on a line, we minus it from the other angle situated on the same line, so we minus 99 from 180to get 81

Hope this helps! Please make me the brainliest, it’s not necessary but appreciated, I put a lot of effort and research into my answers. Have a good day, stay safe and stay healthy.

5 0

2 years ago

Which of these equals 2.427? Select all that apply. A 1.34 + 1.087 B 1.4 + 1.027 C 8.35 - 5.923 - D 6 - 3.573. Please help I'm d

PtichkaEL [24]

Answer:

All of them are equal to 2.427

Step-by-step explanation:

A = 2.427

B = 2.427

C = 2.427

D = 2.427

8 0

2 years ago

A set of silverware contains 30 pieces. The set contains only spoons, forks, and knives. It contains the same number of spoons a

Tema [17]

Let the number of knife be x.
Knife = x
Spoon = 2x
forks = 2x

Total = 30
x + 2x + 2x = 30
5x = 30
x = 6

Knife = x = 6
forks = 2x = 12
Spoon = 2x = 12

Answer: There are 12 forks.

5 0

2 years ago

Read 2 more answers

If x = 4, y = 2, and z = 10, evaluate the following expression: yz(x + y) – x? Enter​

If x = 4, y = 2, and z = 10, evaluate the following expression: yz(x + y) – x? Enter