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3 years ago

A booth at an amusement park sells sandwiches and a variety of sides. Each

Mathematics

1 answer:

rodikova [14]3 years ago

7 0

Answer: 3

Explanation: 7.50 - 5.25= 2.25 ÷ .75= 3

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What is the answer to. 4x + 7<8

sukhopar [10]

First, subtract 7 on both sides. Now, you have 4x<1. Divide by 4 on both sides. Finally, you get x<1/4 (a quarter or said as one-fourth). So, x<1/4.

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3 years ago

Which answers are examples of the Law of Syllogism? Select each correct answer. If two numbers are even then their sum is even.

maxonik [38]

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3 years ago

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draw and shade a figure that represents 100 percent. label ur figure ''100 percent'' describe the figure in words?

Alecsey [184]

Draw a bar and shade it in all the way

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3 years ago

Logarithms are studied for which of the following reasons? A. To help in solving exponential equations when relating the bases

skad [1K]

Answer:

To help in solving exponential equations when relating the bases cannot be used

Step-by-step explanation:

Recall an equation of the form

$a^{x}=b\\$ from the expression $a^{x}\\$ , $a\\$ is the base and the power is ${x}\\$ .

$a\neq b\\$ it is impossible to carryout the operation since the bases are not equal.

This is where we implore the help of logarithm which help us to bring the base to a come base i.e using the property below

$loga^{x}=logb\\x=\frac{logb}{loga} \\$ .

Hence we can conclude that logarithm helps in solving equations when bases cannot easily be related.

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3 years ago

Carlos wants to practice piano 2 hours each day. He practices piano for 3/4 hour before school and 7/10 hour when he gets home.

CaHeK987 [17]

Answer:

Carlos has practiced piano for $\frac{29}{20}=1\frac{9}{20}$ hours.

Carlos needs to practice $\frac{11}{20}$ hours.

Step-by-step explanation:

We have been given that Carlos wants to practice piano 2 hours each day. He practices piano for 3/4 hour before school and 7/10 hour when he gets home.

First of all, we will find piano practiced before school and after school by adding both amounts as:

$\frac{3}{4}+\frac{7}{10}$

Make a common denominator:

$\frac{3*5}{4*5}+\frac{7*2}{10*2}$

$\frac{15}{20}+\frac{14}{20}$

Add numerators:

$\frac{15+14}{20}$

$\frac{29}{20}$

Therefore, Carlos has practiced piano for $\frac{29}{20}$ hours.

Now, we will subtract $\frac{29}{20}$ from 2 find number of hours Carlos needs to practice to reach his goal.

$2-\frac{29}{20}$

$\frac{2*20}{20}-\frac{29}{20}$

$\frac{40}{20}-\frac{29}{20}$

$\frac{40-29}{20}$

$\frac{11}{20}$

Therefore, Carlos needs to practice $\frac{11}{20}$ hours before going to bed in order to meet his goal.

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3 years ago