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3 years ago

31 divided by 2 0ver 4 times 2 equals

Mathematics

2 answers:

Luba_88 [7]3 years ago

5 0

31 divided by 2 equals 15.5 and 4 x2 =8 and that = 15 5/8

babymother [125]3 years ago

3 0

31 divided by 2 = 15.5/8 = 0.51612903235. Estimate and get your answer.

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a garden is 15 m × 10 m . It has a 2.6. m wide flower bed all around outside it. There is also a 2.5 m wide grassy path all arou

erastova [34]

Answer:

flower bed = 157.04 $m^{2}$

grassy path = 202 $m^{2}$

Step-by-step explanation:

If you draw this out, it's basically a rectangle inside a rectangle inside a rectangle. I'm going to call those rectangles A, B, and C. with A being the smallest and C being the biggest.

first we need to find the area of A, B, and C.

A will be easy because we're already given that its 15x10

Area A = 150 $m^{2}$

To find area B, we need to add the 2.6 pathway to all the sides, so it'll be:

length: 15+2.6(2) = 20.2 m

width: 10+2.6(2) = 15.2 m

Area B = 307.04 $m^{2}$

Then we do the same for area C but with 2.5 m.

length: 20.2+2.5(2) = 25.2 m

width: 15.2+2.5(2) = 20.2 m

Area C = 509.04 $m^{2}$

To find the area of just the flower bed, we need to subtract area A from area B, then to find grassy path we need to subtract area B from area C.

flower bed: 307.04-150 = 157.04 $m^{2}$

grassy path: 509.04-307.04 = 202 $m^{2}$

6 0

3 years ago

find the smallest number of terms of the AP "-54,-52.5,-51,-49.5" ....that must be taken for the sum of the terms to be positive

wel

The smallest number of terms of the AP that will make the sum of terms positive is 73.

Since we need to know the number for the sum of terms, we find the sum of terms of the AP

<h3>Sum of terms of an AP</h3>

The sum of terms of an AP is given by S = n/2[2a + (n - 1)d] where

n = number of terms,
a = first term and
d = common difference

Since we have the AP "-54,-52.5,-51,-49.5" ....", the first term, a = -54 and the second term, a₂ = -52.5.

The common difference, d = a₂ - a

= -52.5 - (-54)

= -52.5 + 54

= 1.5

<h3>Number of terms for the Sum of terms to be positive</h3>

Since we require the sum of terms , S to be positive for a given number of terms, n.

So, S ≥ 0

n/2[2a + (n - 1)d] ≥ 0

So, substituting the values of the variables into the equation, we have

n/2[2(-54) + (n - 1) × 1.5] ≥ 0

n/2[-108 + 1.5n - 1.5] ≥ 0

n/2[1.5n - 109.5] ≥ 0

n[1.5n - 109.5] ≥ 0

So, n ≥ 0 or 1.5n - 109.5 ≥ 0

n ≥ 0 or 1.5n ≥ 109.5

n ≥ 0 or n ≥ 109.5/1.5

n ≥ 0 or n ≥ 73

Since n > 0, the minimum value of n is 73.

So, the smallest number of terms of the AP that will make the sum of terms positive is 73.

Learn more about sum of terms of an AP here:

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4 0

2 years ago

Use substitution to determine which value of x makes the equation 12+x=14.2 true.

Elis [28]

<u>So brianly is glitched so here is the answer </u>

3 0

3 years ago

Read 2 more answers

A samosa recipe calls for 8 ounces of peas and 6 ounces of diced potatoes. Brianna makes a batch of samosa using 24 ounces of pe

PIT_PIT [208]

Answer:

18 diced potatoes

Step-by-step explanation:

4 0

3 years ago

65 is 52% of what number

svp [43]

65 is 52% of 125.

I do the IS over OF operation when finding a percentage, where you multiply the is by 100 then divide by the percentage.

6 0

3 years ago