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katen-ka-za [31]
3 years ago
13

Can someone help me with this, please? I'm not sure how to solve this.

Mathematics
1 answer:
bazaltina [42]3 years ago
4 0

Answer:

11.) 10w^2 + 43w + 21.

12.) -15y^2 - 2y + 8

Check the explanation for details

Step-by-step explanation:

11.) You are meant to multiply each row by both columns. For instance, multiply 5w by 2w and 7 you will get 10 w^2 and 35 w

Also, multiply 3 by both 2w and 7 you will get 6w and 21. Therefore,

Expansion of ( 5w + 3 )( 2w + 7 ) will produce 10w^2 + 37w + 6w + 21

= 10w^2 + 43w + 21.

12.) Repeat the same process by multiplying row by column.

Multiply -3y by 5y and 4 you will get -15y^2 and -12y.

Also, multiply 2 by same 5y and 4. You will get 10y and 8

Therefore, the expansion of

( -3y + 2 )( 5y + 4 ) will be

-15y^2 - 12y + 10y + 8

-15y^2 - 2y + 8

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154 is the same as the product of 158 and n, decreased by 132
grandymaker [24]

Answer:

Equation: 154 = 158n - 132 n = 11/6

Step-by-step explanation:

Let's start by converting this into an equation. Some keywords to look for are "is" which means an equal sign (=), "product" which is multiplication (*), and "decreased" which means a minus sign (-):

So this is our equation: 154 = 158n - 132

Now we have to solve for n:

First, we add 132 to both sides to isolate the n more:

286 = 158n

Then to completely isolate the n, we divide both sides by 158

286

------    =     n

156

<u>n = 11/6, final answer.</u>

8 0
2 years ago
In ΔQRS, the measure of ∠S=90°, RS = 3.3 feet, and QR = 9.4 feet. Find the measure of ∠R to the nearest degree.
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Answer:

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3 0
3 years ago
1. A shipping company charged $15 to ship a package and 5% of the shipping charge for insurance on the package. What was the tot
astra-53 [7]
Just simply multiply and then add'

15*.05= .75 so .75 was added to the price

now add

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8 0
4 years ago
Read 2 more answers
Converting Point-Slope Use the point-slope form of a line to write the equation of a line that has a slope of 2 and passes throu
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Here is HOW to do it.....:

Input Data :

Coordinates  

(

x

A

,

y

A

)

(xA,yA)

= (5, 4)

Slope (m) = 8

Objective :

Find slope of a straight line?

Formula :

y

−

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A

=

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(

x

−

x

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y-yA=m(x-xA)

Solution :

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Answer:

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3 years ago
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