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3 years ago

13

What is three eights plus one eight

1 answer:

kramer3 years ago

6 0

Answer:

3/8 + 1/8

Step-by-step explanation:

so you just need to add the both firsnumber which is 3 and 1 is equal to 4 and second is you add the both second number whick is 8 and 8 is equal to 16 now that you got all the numbers needed to complete the fraction just put the 4 in the top and pu the slach or / and put the 16 in the bottom

Exact Answer:<em>4</em><em>/</em><em>1</em><em>6</em>

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Andre has been practicing his math facts. He can now complete 135 multiplication facts in 90 seconds. If Andre is answering ques

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Andre can complete 1.5 facts in one second.

Step-by-step explanation:

Given,

Number of multiplication facts completed in 90 seconds = 135

Therefore;

90 seconds = 135 facts

Dividing both sides by 90 to fins the facts per second

$\frac{90}{90}\ seconds=\frac{135}{90}\ facts\\\\1\ second = 1.5\ facts$

Andre can complete 1.5 facts in one second.

Keywords: unit rate, division

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2 years ago

Find the sum of the first six terms of the sequence.<br><br><br> S6 = ⇒ 84

k0ka [10]

Answer:

Explained below.

Step-by-step explanation:

Consider the series is a set of first 6 natural numbers.

Sum of first <em>n</em> terms is:

$\text{Sum of n terms}=\frac{n(n+1)}{2}$

$\text{Sum of first 6 terms}=\frac{6(6+1)}{2}$

$=3\times7\\=21$

Consider the series is an arithmetic sequence.

Sum of first <em>n</em> terms is:

$S_{n}=\frac{n}{2} [2a+(n-1)d]$

Here<em>,</em>

<em>a</em> = first term

<em>d</em> = common difference

Consider the series is an geometric sequence.

Sum of first <em>n</em> terms is:

$S_{n}=\frac{a_{1}\cdot(1-r^{n})}{(1-r)}$

Here<em>,</em>

<em>a₁</em> = first term

<em>r</em> = common ratio

7 0

2 years ago

Sara is 5 ft 10 in tall. To the nearest centimeter how tall is Sara? If 1 inch equals 2.54 centimeters

Novay_Z [31]

Answer:

<em>S</em><em>A</em><em>R</em><em>A</em><em>'</em><em>S</em><em> </em><em>h</em><em>e</em><em>i</em><em>g</em><em>h</em><em>t</em><em> </em><em>i</em><em>s</em><em> </em><em>2</em><em>2</em><em>.</em><em>7</em><em> </em><em>c</em><em>m</em>

Step-by-step explanation:

if 1 inch equals 2.54 cm then 5ft will be:

=5*2.54

=12.7 cm

therefore, sara's height in centimeter:

=12.7+10

=22.7 cm

3 0

3 years ago

Read 2 more answers

How do i write, Two increased by three equals the quotient of ten and two. Use x to represent any unknown number?

inn [45]

Answer:

$2+3=\frac{10}{2}$

Step-by-step explanation:

we know that

The phrase " Two increased by three equals the quotient of ten and two" is equal to the algebraic expression

$2+3=\frac{10}{2}$

$5=5$ -----> is true

7 0

2 years ago

Use a two-column proof to prove the Triangle Proportionality Theorem:

photoshop1234 [79]

Answer:

Step-by-step explanation:

From the picture attached,

Statements Reasons

1). In ΔABC, DE intersects AB and AC 1). Given

2). DE║BC 2). Given

3). ∠ADE ≅ ABC 3). Corresponding angles postulate

4). ∠AED ≅ ∠ACB 4). Corresponding angles postulate

5). ΔADE ~ ΔABC 5). AA similarity postulate

6). $\frac{AD}{AB}=\frac{AE}{AC}$ 6). Definition of two similar triangles

Hence proved.

4 0

3 years ago