4 years ago

The average third grade student can read

Mathematics

1 answer:

Lynna [10]4 years ago

6 0

Answer:

16x

Step-by-step explanation:

80 divided by 5 is 16, so the student can read 16 words per minute. X is the number of minutes.

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Find the sum. 14 + 42 + 70 + ... + (28n − 14)

lions [1.4K]

Answer:

14n^2.

Step-by-step explanation:

This is Arithmetic with first term a = 14 and common difference d = 28.

Sum of n terms = n/2[2a + (n-1)d]

= n/2(28 +( n -1)28]

= n/2(28 + 28n - 28)

= 14n^2

5 0

2 years ago

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Look at the figure, FHJM. find the length of HJ

Nat2105 [25]

Answer:

$HJ=42\ m$

Step-by-step explanation:

we know that

In a parallelogram opposite sides are equal and parallel

The figure FHJM is a parallelogram

$FH=JM=36\ m$

$HJ=FM=42\ m$

therefore

$HJ=42\ m$

6 0

3 years ago

How do I solve 18-4K=-2 step by step

jek_recluse [69]

Answer:5

Step-by-step explanation: 18-4K = -2

-18 -18

-4K = -20

-4 -4

K=5

3 0

4 years ago

The area of the sandbox is 56 2/3 square feet. The width is 8 1/2 feet. What is the length? Hint: Divide area by length

sertanlavr [38]

Answer:

20/3 ft or 6 2/3 ft

Step-by-step explanation:

A = 56 2/3 sq ft

W = 8 1/2 ft

L = ?

A = LW

L = A/W

$L = \dfrac{A}{W}$

$L = \dfrac{56~\frac{2}{3}~sq~ft}{8~\frac{1}{2}~ft}$

Change the mixed numbers into fractions.

$a\frac{b}{c} = \dfrac{ac + b}{c}$

$L = \dfrac{\frac{56 \times 3 + 2}{3}}{\frac{8 \times 2 + 1}{2}}$

$L = \dfrac{\frac{170}{3}}{\frac{17}{2}}$

$L = \dfrac{170}{3} \div \dfrac{17}{2}$

$L = \dfrac{170}{3} \times \dfrac{2}{17}$

$L = \dfrac{170 \times 2}{3 \times 17}$

$L = \dfrac{17 \times 10 \times 2}{3 \times 17}$

$L = \dfrac{10 \times 2}{3}$

$L = \dfrac{20}{3}$

Answer: 20/3 ft or 6 2/3 ft

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4 years ago

Evaluate the expression: -8 -(-3)

Debora [2.8K]

Answer:

-5

Step-by-step explanation:

5 0

3 years ago

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