MATHEMATICS MIDDLE SCHOOL

Hope someone help.me

Answers

Answer 1

Answer:

x = r sin θ cos Ф

x² = r² sin² θ cos² Ф

y = r sin θ sin Ф

y² = r² sin² θ sin² Ф

z = r cos θ

z² = r² cos² θ

x² + y² + z²

= r² sin² θ cos² Ф + r² sin² θ sin² Ф + r² cos² θ

= r² sin² θ (cos² Ф + sin² Ф) + r² cos² θ

= r² sin² θ + r² cos² θ

= r² (sin² θ + cos² θ)

= r² √

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1/4 to 1/2 find the percent of change-increase or decrease

Answers

The percent of change would be -33.3% which would then equal a 33.3% decrease (when decimal is rounded)

what I did was turn 1/4 and 1/2 into decimals to make it easier to solve

It's a decrease 1/4 to 1/2 is a decrease

PLEASE HELP IM ON A TIMER! ILL MARK BRAINLIEST!Which statement about converting metric units of measurement is true? Use the metric table to help answer the question.

A. There are 0.35 hectoliters in 35 deciliters.

B. There are 7.62 centiliters in 762 liters.

C. There are 6.8 kiloliters in 68 hectoliters.

D. There are 0.75 deciliters in 7.5 liters.

Answers

Answer:

Below is the conversion table for letter A to D:

1 deciliter = 0.001 hectoliters

1 liter = 100 centiliters

1 kilolieter = 10 hectoliter

1 liter = 10 deciliter

The correct one would be letter C - There are 6.8 kiloliters in 68 hectoliters. Since 1 kiloliters (kl) is equal to 10 hectoliters (hl), 6.8 kl times 10 is equal to 68 h

Step-by-step explanation:

Answer:

Step-by-step explanation:

PLEASE HELP ASAP!!! *problems attached

Answers

First one: A=5
Second one: no solution

From 25% of £30.44 subtract 50% of £13.50

Answers

25% means 0.25 (It also means 1/4.)
50% means 0.5 (It also means 1/2.)

0.25 of 30.44 = 7.61

0.5 of 13.50 = 6.75

From 7.61, subtract 6.75.

OK. I did it. The question just says "do it". It doesn't ask us what the result is.

If anybody asks you, you can do the subtraction, or just tell them it's 0.86 .
(Is that 86 pence?)

$25\% \cdot\£30.44 -50\% \cdot \£13.50=0.25\cdot \£30.44-0.5\cdot \£13.5=\n\n= \£7.61- \£6.75= \£0.86$