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3 years ago

Jonas buys a new hat that costs 9.05 Kara buys a new t shirt

Mathematics

1 answer:

maksim [4K]3 years ago

8 0

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X +y=5, 3x-2y+5=0, this is the question

Neko [114]

Step-by-step explanation:

x+y=5

3x-2y+5=0

3x-2y= -5

x+y=5...... equation 1

3x-2y= -5....... equation 2

there fore make x the subject of the formula in equation 1

x=5-y.. equation 3

substitute equation three in equation 2

3(5-y)-2y=-5

15y-3y-2y=-5

10y=-5

divide both sides by 10

y=-5/10

y=-½

substitute y into equation 1

x+(-½)=5

x=5+½

x=5½

x=5½,y= -½

4 0

2 years ago

Suppose that a regression line for some data transformed with logarithms predicts that when x equals 6, log(y) will equal 2.012.

KIM [24]

Answer:

102.8

Step-by-step explanation:

If log₁₀y = 2.012, y = 10^2.012 = 102.8

8 0

3 years ago

Read 2 more answers

The price of a certain painting increased by 20% during the first year and decreased by 15% during the second year. The price of

Rina8888 [55]

Answer:

A.102%

Step-by-step explanation:

Let cost price of painting=$100

In first year price increased 20%

Then , the price= $100+100(0.20)=$ $120

In second year

Price decreased 15%

Then , the price of painting= $120-120(0.15)$

The price of painting=$102

Percent = $\frac{final\;price}{Initial\;price}\times 100$

By using this formula

Then, we get

Percent of the original price= $\frac{102}{100}\times 100$

Percent of the original price=102%

Option A is true.

8 0

3 years ago

The admission cost to enter a fair is $5. The cost to ride each ride at the fair is

Llana [10]

Answer:

Step-by-step explanation:

ne spent $42 for shoes. This was $14 less than twice what she spent for a blouse. How much was the blouse?

First, identify what the question is asking for.

Jane spent $42 for shoes. This was $14 less than twice what she spent for a blouse . How much was the blouse?

Next, identify the numbers.

Jane spent $42 for shoes. This was $14 less than twice what she spent for a b

6 0

2 years ago

What is an algebraic expression?

Klio2033 [76]

Answer: an expression obtained by a finite number of the fundamental operations of algebra upon symbols representing numbers.

Step-by-step explanation: In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations. For example, 3x² − 2xy + c is an algebraic expression.

3 0

2 years ago