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Gre4nikov [31]
3 years ago
11

Which expression is equivalent to 7- 3x +2?​

Mathematics
1 answer:
Colt1911 [192]3 years ago
8 0

Answer: 9-3x

Step-by-step explanation:

You add like terms

don't look at the 3x for now

positive 7 + positive 2 = 9

there is a negative sign next to 3x

9 goes first so

9 - 3x

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You are making a scaledrawing of a room using a scale of1 inch : 4 feet.a. The room is 14 feet by 18 feet. Find itsdimensions in
lilavasa [31]

Answer:

a. 3.5 inches by 4.5 inches

b. 1.5 inches

c. Divide 48 inches by 2 and multiply 1 inch by 12 to get a scale of 1 : 2

Step-by-step explanation:

A scale is a representative fraction showing the relationship between length on a drawing and actual length.

i.e scale = \frac{length on a drawing}{actual length}

 scale = 1 inch : 4 feet

a. The dimensions in the drawing can be determined as;

1 inch : 4 feet implies an inch on the drawing equates 4 feet on actual length.

\frac{14}{4} = 3.5 inches

\frac{18}{4} = 4.5 inches

Dimensions on drawing is 3.5 inches by 4.5 inches.

b. The length of the sofa is 6 feet, its length on the drawing is;

\frac{6}{4} = 1.5 inches

c. To enlarge the scale so as to double the dimensions of the drawing, we have;

12 inches = 1 feet

4 feet = 4 × 12 = 48 inches

given scale = 1 inch : 48 inches

Thus, divide 48 inches by 2 and multiply 1 inch by 12.

scale = 12 inch : 24 inch

scale = 1 : 2

To double the dimensions of the drawing, the scale required is 1 : 2. This implies that a unit measure on the drawing is synonymous to 2 measures on the actual reading.

6 0
3 years ago
Round 44.8 to the nearest whole number
-BARSIC- [3]
45 because 1-4 round down and 6-9 round up to make the 44 become a 50
5 0
2 years ago
Let f (x ) = 3x² - 4 and let g (x) = 2x + 1. <br> Find the value of f[g(2)].
stepan [7]

Answer:

The value of f[g(2)] is 71.

Step-by-step explanation:

We need to find f[g(2)].

The first step is finding f[g(x)]

We have that:

f(x) = 3x^{2} - 4

g(x) = 2x + 1

To find f[g(x)], the first step is replacing each x is f by g(x). So

f(g(x)) = 3(2x+1)^{2} - 4

Now we replace x by 2

f(g(2)) = 3(2*2+1)^{2} - 4 = 75 - 4 = 71

The value of f[g(2)] is 71.

3 0
3 years ago
Read 2 more answers
Please someone help me!!! its urgent!
I am Lyosha [343]

Answer:

<em>12.99</em>

Step-by-step explanation:

<em>a²+b²=c²</em>

<em>a²+b²=c²√91²+√78²=c²</em>

<em>a²+b²=c²√91²+√78²=c²√8281+√6084=c²</em>

<em>a²+b²=c²√91²+√78²=c²√8281+√6084=c²91+78=c²</em>

<em>a²+b²=c²√91²+√78²=c²√8281+√6084=c²91+78=c²169=c²</em>

<em>a²+b²=c²√91²+√78²=c²√8281+√6084=c²91+78=c²169=c²c=√169</em>

<em>a²+b²=c²√91²+√78²=c²√8281+√6084=c²91+78=c²169=c²c=√169 =13</em>

8 0
2 years ago
Which investment option guarantees payments at regular intervals after retirement?
lesya [120]
The answer is, A.) Stock.
3 0
3 years ago
Read 2 more answers
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