2 years ago

What is sum of -3x^2 - 7x + 9 and - 5x^2 + 6x - 4

Mathematics

1 answer:

valkas [14]2 years ago

8 0

-8x2-x +5 hope this helps

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Jaime drew the number line below to show 2/3 4/5. Explain how the number line shows 2/3 times 4/5. What is the product?

bearhunter [10]

Answer:

$\frac{2}{3} * \frac{4}{5} = \frac{6}{15}$

Step-by-step explanation:

Given

$\frac{2}{3} * \frac{4}{5} =$

The number line is missing from the question.

So, I will answer the question and also draw the number line to show the product.

$\frac{2}{3} * \frac{4}{5} =$

$\frac{2}{3} * \frac{4}{5} = \frac{6}{15}$

To represent this on a number line;

We draw a number line of 15 points, and place a dot on the 6th point.

This represents 6/15

See attachment

8 0

2 years ago

last year my math book cost $126,and i was told the price would increase 9% each year. If the cost continues to increase at this

mrs_skeptik [129]

2,268 because u have to add the 2 years with 126

3 0

3 years ago

Read 2 more answers

URGENT! Can anyone explain how to solve this??

Alex

Check the picture below

the triangles are similar, the angles are congruents then

so... just add them up, and divide by 2, or set them as rational

7 0

2 years ago

Noah is thinking of two fractions that have the same sum of 3/5. Each fraction has a numerator of 1. What are the denimonitors o

Ray Of Light [21]

Answer:

The denominators of fractions are : 2 and 10

Step-by-step explanation:

$\text{Let the two fractions be : }\frac{1}{x}\thinspace and\thinspace \frac{1}{y}\\\\\implies \frac{1}{x}+\frac{1}{y}=\frac{3}{5}\\\\\implies 5\cdot x +5\cdot y-3\cdot x\cdot y=0$

By hit and trial method, if we put x = 2 and y = 10 then the resulting equation (1) is satisfied and all the conditions hold.

So, the denominators are 2 and 10

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3 years ago

Andy received a 25% discount on the book he bought at the book sale if he paid 17.40 what was the original price for the book

zalisa [80]

Answer:

$21.75

Step-by-step explanation:

Add 25% then subtract to get back to $17.40

6 0

3 years ago

What is sum of -3x^2 - 7x + 9 and - 5x^2 + 6x - 4 ​

What is sum of -3x^2 - 7x + 9 and - 5x^2 + 6x - 4