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3 years ago

Pls help thanks alot in advance

Mathematics

2 answers:

riadik2000 [5.3K]3 years ago

7 0

Answer:A=true B.=true C= false D=true

Step-by-step explanation:

put them in to an algebra calculator

Rashid [163]3 years ago

4 0

Answer:

A. True

B. True

C. False

D. True

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1. Evaluate the expression when x=2, y = 3, and z= -9:

kupik [55]

Answer:

-7

Step-by-step explanation:

substitute the given values into the expression

xy-x

(-2 times 3)-1

-6 - 1 = -7

6 0

3 years ago

The Burns family went to breakfast at the huddle house. Mr. Burns ordered a meal for $7.75, Mrs. Burns ordered a meal for $ 9.50

Scorpion4ik [409]

Answer: The answer to this question is $37.45.

Step-by-step explanation: The sum of all the meals cost is $31.21, and 20% of 31.21 would be 6.24

The sum of 31.21 and 6.24 results in $37.45

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3 years ago

Aaron's car used 3- gallons of gas when

monitta

We want to find miles per gallon. Another way of saying miles per gallon is miles/gallon. So we will plug the numbers into this equation:

60 miles/3 gallons = 20 miles/gallon

This is because 60/3=20.

I hope this makes sense.

4 0

3 years ago

Read 2 more answers

One number is 4 times as large another. The sum of their reciprocals is 45/4. Find the two numbers

Reptile [31]

Let,
the numbers be "x" and "y"
According to the question,
x = 4y ......................................................equation (1)

$\frac{1}{x} + \frac{1}{y}= \frac{45}{4}$ ...................................equation (2)

Taking equation (2)
$\frac{1}{x} + \frac{1}{y}= \frac{45}{4}$

Substituting the value of "x" from equation (1), we get,

$\frac{1}{(4y)} + \frac{1}{y}= \frac{45}{4}$

$\frac{1}{4y} + \frac{1}{y}* \frac{4}{4} = \frac{45}{4}$

$\frac{1}{4y} + \frac{4}{4y}= \frac{45}{4}$

$\frac{1+4}{4y} = \frac{45}{4}$

$\frac{5}{4y} = \frac{45}{4}$

Cross multiplying, we get,

$5*4 = 45*4y$

$20 = 180y$

$\frac{20}{180} = y$

$\frac{1}{9} = y$

$y = \frac{1}{9}$

Now,
Taking equation (1)
x = 4y
Substituting the value of "y", we get

$x = 4( \frac{1}{9} )$

$x= \frac{4}{9}$

So, the numbers are $\frac{1}{9}$ and $\frac{4}{9}$

7 0

3 years ago

Read 2 more answers

How do you turn 3/5 to a decimal

Simora [160]

Answer: the answer is 0.6

Step-by-step explanation:

you divide 3 by 5

5 0

3 years ago

Pls help thanks alot in advance ​

Pls help thanks alot in advance