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3 years ago

Read the problem.

Mathematics

2 answers:

inna [77]3 years ago

4 0

Answer:

300

Step-by-step explanation:

120÷40=3

3×100=300

dividing 120 by 4 will get you 1% so then to find 100% you multiple by 100

Viefleur [7K]3 years ago

3 0

Answer:

300

Step-by-step explanation:

The total number of desserts is x. we don't know what it is.

40% of all the desserts are cookies.

That is 40% of x.

We are told that 120 of the desserts are cookies.

That means that 40% of all desserts amount to 120.

40% of x = 120

0.4x = 120

Divide both sides by 0.4

0.4x/0.4 = 120/0.4

x = 300

Answer: In all there are 300 desserts.

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Classify the following triangle. Check all that apply.

Ludmilka [50]

Answer: obtuse, scalene

Step-by-step explanation:

This triangle has an angle that is 102 degrees. 102 is greater than 90, so the triangle is obtuse. None of the sides of the triangle are the same length, so the triangle is scalene.

Hope it helps <3

8 0

3 years ago

MAT closed at $38.11 per share yesterday . Today, the stock price moved to $40.56 per share. What was the percent of change ?

Tatiana [17]

Answer:

Step-by-step explanation:

40.56-38.11 = 2.45

2.45/38.11 = 0.064

multiply .064 times 100

6.4% is your percent of change

4 0

3 years ago

RATIO TABLES: An ostrich can run at a rate of 50 miles in 60 minutes. At this rate, how long would it take an ostrich to run 15

Marat540 [252]

15 50
---- = ----
x 60
(15*60)/50
900/50
18

It takes the ostrich 18 minutes to run 15 miles.

7 0

3 years ago

Use the properties of operations to determine if each pair of expressions is equivalent

SIZIF [17.4K]

Using the properties of operations the given pair of expressions are not equivalent

Solution:

Given that, we have to use the properties of operations to determine if each pair of expressions is equivalent

And the two expressions are:

$\frac{1}{2}(4-2 x) \text { and } 2-2 x$

Now, we know that, there are four (4) basic properties of operations:

Commutative, Associative, Distributive and Identity. These properties only apply to the operations of addition and multiplication.

So, if we observe we can apply distributive property on 1st expression

The distributive property of multiplication states that when a number is multiplied by the sum of two numbers, the first number can be distributed to both of those numbers and multiplied by each of them separately, then adding the two products together for the same result as multiplying the first number by the sum.

$\begin{array}{l}{\frac{1}{2}(4-2 x) \rightarrow \frac{1}{2}(4)-\frac{1}{2}(2 x)} \\\\ {\rightarrow 2-x}\end{array}$

Here the resulting expression is 2 – x and it is not equivalent to 2 – 2x

Hence, the given two expressions are not equal.

3 0

3 years ago

Piper works at a camera store. He is paid an hourly rate +16% commission on everything he sells. One week, he was paid $515 for

umka21 [38]

His hourly rate is $13.75.

Let x be the hourly rate. Since he works 20 hours that week, the hourly wages are given by 20x. We add to that his commission, which is 16% of the $1500 in sales, or 0.16(1500). This totals to 515:

20x + 0.16(1500) = 515
20x + 240 = 515

Subtract 240 from both sides:
20x + 240 - 240 = 515 - 240
20x = 275

Divide both sides by 20:
20x/20 = 275/20
x = 13.75.

8 0

3 years ago