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Dafna11 [192]
3 years ago
13

What is the value of y when x=3 in this equation y=2x+2

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
4 0

Answer:

8

Step-by-step explanation:

if you substitute 3 for x the equation becomes y=2(3) + 2

using order of operations you multiply 3 by 2 and then add 2 which will give you 8

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9. Travelling at 80 km/h, how far will a car go<br> in 45 mins?
AysviL [449]

Answer:

60

Step-by-step explanation:

distance=80*45/60

=80*0.75

=60km

3 0
3 years ago
Jenna is drawing a sketch of her room. The room is 15 feet long by 12 feet wide. The
SOVA2 [1]

Answer:

4 inches

Step-by-step explanation:

Actual dimensions:

Length = 15 feet

Width = 12 feet

Scale dimensions:

Length = 5 inches

Width = x inches

Write a proportion:

\dfrac{\text{Actual length}}{\text{Scale length}}=\dfrac{\text{Actual width}}{\text{Scale width}}\\ \\ \\\dfrac{15\ feet}{5\ inches}=\dfrac{12\ feet}{x\ inches}\\ \\x=\dfrac{5\ inches\times 12\ feet}{15\ feet}=4\ inches

3 0
3 years ago
The probability of drawing two nickels from a bag at random without replacement is 33/95 . The probability of drawing a nickel f
Natasha_Volkova [10]
The probability that two events occur is equal to the product of the individual events happening or occurring. For this item, we let x be the probability that is unknown such that the relationship between them may be expressed as,
                            (3/5)(x) = 33/95
The value of x from the equation is 11/19. 
7 0
3 years ago
Idek how to explain this but please help me
Leno4ka [110]

Answer:

Put 4 in the place of x then you'll get

\frac{10}{22}

3 0
3 years ago
Read 2 more answers
Simplify the trigonometric expression sin(4x) +2 sin(2x) using Double-Angle<br> Identities.
emmasim [6.3K]

Answer:

8sin(x)cos³(x)

Step-by-step explanation:

sin(4x) +2 sin(2x)  = 2sin(2x)*cos(2x) + 2sin(2x) = 2sin(2x)(cos2x + 1)=

= 2sin(2x)(cos²x - sin²x + cos²x + sin²x)=²2sin(2x)*(2cos²x)=

= 4*2sin(x)*cos(x)*cos²(x)= 8sin(x)cos³(x)

6 0
3 years ago
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