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3 years ago

What are the coefficients of -4x - 7y + 21z?

Mathematics

2 answers:

kap26 [50]3 years ago

4 0

Answer:

-4, -7, 21

Step-by-step explanation:

Coefficients are a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g. 4 in 4x)

So in this problem -4, -7 and 21 are the coefficients

Sedaia [141]3 years ago

3 0

Answer:

-4

-7

Step-by-step explanation:

a coefficient is the number before the variable

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Several poles, that were 0.4 meters in length, were attached end to end to form a pole that was 150 meters long. How many poles,

sertanlavr [38]

So for this equation you would divide 150 by 0.4
150/0.4= 375 poles

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Why did my dad hasn't come back with the milk after ten years?

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2 years ago

The Schuller family has five members. Dad is 6ft 2in tall. Mom is 3 inches shorter than Dad, but 2 inches taller than Ivan. Marc

qwelly [4]

Answer:

Mean = 5 feet 2 inches.

Step-by-step explanation:

1 feet = 12 inches

Height of Dad = 6 feet 2 inches = {(6 × 12)+2} = 74 inches

Mom is 3 inches shorter than dad = 74 - 3 = 71 inches (5 ft 11 in)

Since mom is 2 inches taller than Ivan,

Height of Ivan = 71 - 2 = 69 inches (5 ft 9 in)

Marica is 5 inches shorter than Ivan,

Height of Marica = 69 - 5 = 64 inches (5 ft 4 in)

Marica is twice as tall as Sally-Jo.

Height of Sally-Jo = 64 ÷ 2 = 32 inches (2 ft 8 in)

Hence the mean height of the Schuller family

= $\frac{74+71+69+64+32}{5}$

= 62 inches

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Mean height of the Schuller family is 5 feet 2 inches.

3 0

3 years ago

Which of these is an example of an overdraft?

shutvik [7]

The correct answer is "Having $517.98 in you checking account and writing a check for $563.28" because you are spending more money than you have in your account.

Hope this helped :)

5 0

3 years ago

Question 8

madreJ [45]

9514 1404 393

Answer:

B. 9 cm

Step-by-step explanation:

The number of face masks Ray can make with 20 m of cord is ...

(20 m)(100 cm/m)/(10.25 cm/mask) = 195.12195 masks

To make one more mask, he will need to buy an additional amount of ...

(196 -195.12195)×(10.25 cm) ≈ 9.00 cm

Ray would need to add 9 cm of cord to his order.

7 0

2 years ago