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NikAS [45]
3 years ago
11

What is the value of the expression 2 + 3^2 * (5 -1)

Mathematics
1 answer:
alexgriva [62]3 years ago
8 0

Answer:

38

Step-by-step explanation:

We are to solve for the expression;

2 + 3² × (5 - 1)

We should aply BODMAS here!

So starting with the brackets;

2 + 3² × 4

Then solving the multiplication part;

3² × 4 = 9 × 4 = 36

Finally adding the integers;

2 + 36 = 38

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Lostsunrise [7]

Total distance of a typical running track  = 402 \frac{1}{4} meters.

Let us convert it into impoerper fraction first, we get

\frac{402\times4+1}{4}=\frac{1609}{4}meters.

Total number of maps in a day = 10 maps.

Number of days of running = 5 days.

Total number of maps of 5 days = 10 × 5 = 50 maps.

Total number of meters in 50 maps = 50\times\frac{1609}{4}=\frac{80450}{4}=20112\frac{1}{2}\ meters..

<h2>Therefore,  20112\frac{1}{2}\ meters will sandra run is she meets her challenge</h2>
5 0
4 years ago
Kittens weigh about 100 grams when born and gain 7 to 15 grams per day. If a kitten weighed 100 grams at birth and gained 8 poun
ddd [48]
You can set up an equation such as 300=100+8x where x is equal to the number of days gone by since birth. The answer would be 25 days.
8 0
3 years ago
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Give two words or phrases that can be used to express operation: addition, subtraction, multiplication, and division
Katarina [22]
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examples: a number increased by 4 is equal to three times another
bob has 4 more apples than joe or


subtraction could be 'less than' or 'decreased by'
examples: 3 less than a number...
a number decreased by 4 is...

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examples: the product of 2 numbers, x and y...
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7 0
3 years ago
Producer of <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20-4x-21" id="TexFormula1" title="x^{2} -4x-21" alt="x^{2} -4x-21" ali
tamaranim1 [39]

Answer:

(x - 7)(x + 3)

Explanation:

\rightarrow \sf x^2 - 4x - 21

breakdown

\rightarrow \sf x^2 - 7x +3x- 21

factor out common terms

\rightarrow \sf x(x - 7) +3(x- 7)

collect into groups

\rightarrow \sf (x+3)(x- 7)

5 0
1 year ago
Please help ppl and thank you
Ne4ueva [31]

Answer:

63

Step-by-step explanation:

180-117=63

7 0
3 years ago
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