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3 years ago

Evaluate 2a+4b a=2 and b = -1

Mathematics

2 answers:

Leona [35]3 years ago

8 0

2(2)+4(-1)=4+-4=0, so your answer is 0 hope this helps

wariber [46]3 years ago

6 0

First, you need to plug in your values. 2(2)+4(-1) and now multiply. 4+(-4) and now add. your answer should be 0.

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Dragon drop each expression two correctly classify it as having a positive or negative product

ioda

Step-by-step explanation:

We multiply it to find the product

positive times positive = positive

positive times negative = negative

negative times positive = negative

negative times negative = positive

$(-\frac{1}{3})(-\frac{1}{3})= \frac{1}{9}$

Negative and negative is positive , so product is positive

$(-\frac{1}{3})(\frac{1}{3})= -\frac{1}{9}$

Negative and positive is negative , so product is negative

$(\frac{1}{3})(-\frac{1}{3})= -\frac{1}{9}$

positive and negative is negative , so product is negative

$(\frac{1}{3})(\frac{1}{3})= \frac{1}{9}$

positive and positive is positive , so product is positive

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3 years ago

What is the value of x?<br><br> Enter your answer in the box.<br> units<br><br> ___Units

kotykmax [81]

The value of x is 28 .

<h3>What is a Triangle ?</h3>

A triangle is a polygon with three sides , three angles and three vertices.

According to the Proportionality Theorem

When a line is parallel to one side and intersects the other lines at two different points then it divides both the line in similar ratio.

As in the given figure DC is parallel to AP ,

then RD : DP = RC:CA

42:15 = x: 10

42/15 = x / 10

x = 42 * 10 /15

x = 28

Therefore the value of x is 28 .

To know more about Triangle

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2 years ago

Nina has $5 and $10 bills in her wallet. She has a total of 13 bills with a value of $85. How many of each type of bill does she

matrenka [14]

Answer:

I got eleven 5 dollar bills and and I got 3 ten dollar bills

Step-by-step explanation:

what i did was start out with 85/5, then that was 17 so I started minusing 2 fives to = 1 ten so 15 5's and 1, 10 then so forth 13 5 dollar bills and 2 10 dollar bills, 11 5 dollar bills and 3 ten dollar bills. y=-2x+17

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2 years ago

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Tema [17]

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3 years ago

Hi can you help me with this?

katrin [286]

Answer:

-3.9/1

Step-by-step explanation:

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3 years ago

Read 2 more answers