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Bond [772]
3 years ago
11

Express as a trinomial. (3x + 7)(3x + 4)

Mathematics
1 answer:
timama [110]3 years ago
5 0

Answer:

9x² + 33x + 28

Step-by-step explanation:

(3x + 7)(3x + 4)\\= 3x(3x + 4) + 7(3x + 4)\\= 9x^2 + 12x + 21x + 28\\= 9x^2 + 33x + 28

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Emily needs enough Fabric for 3 1/2 hats. Since she has half a hat done. If each bag requires 1 2/7 ft of Fabric, how much fabri
kow [346]

first off let's convert the mixed fractions to improper fractions.

\stackrel{mixed}{3\frac{1}{2}}\implies \cfrac{3\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{7}{2}} ~\hfill \stackrel{mixed}{1\frac{2}{7}}\implies \cfrac{1\cdot 7+2}{7}\implies \stackrel{improper}{\cfrac{9}{7}}

she already did half a hat, so we can say   \cfrac{7}{2}-\cfrac{1}{2}\implies \cfrac{7-1}{2}\implies 3

so she only needs enough fabric to make 3 more full hats, we know each one uses 9/7 ft, so

3\cdot \cfrac{9}{7}\implies \cfrac{27}{7}\implies 3\frac{6}{7}

5 0
2 years ago
It costs $23.50 to enter an amusement park and $0.25 to ride a ride. You have $24. Write an equation that represents the number
wlad13 [49]
The equation is 24=23.50+0.25r
8 0
3 years ago
Function fhas a domain of
chubhunter [2.5K]

Answer:

The domain of a function is the set of all possible inputs for the function. For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0.

8 0
3 years ago
A map uses a scale of 3 inches = 20 miles The distance on the map between two cities is 18 inches. What is the actual distance b
jeka94
120 miles Bc 18 divided by 3 is 6
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7 0
3 years ago
Simplify the expression:<br> 1x+10y=4+3
igomit [66]

Answer:

Simplify the expression:

1x+10y=4+3

Step-by-step explanation:

1 : x+10y=4+3

x+10y=4+3

x+10y=7

x+10y-10y=7-10y

x=7-10y

hope it helps

3 0
3 years ago
Read 2 more answers
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