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sergejj [24]
3 years ago
9

3x plus 4y plus y minus 2x plus 8x

Mathematics
1 answer:
Nataly_w [17]3 years ago
5 0

Answer:

9x + 5y

Step-by-step explanation:

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The error is in the middle: 2(-12) = -24 not 24.
sergiy2304 [10]

Answer:

There is no question so I can not respond with a answer.

Step-by-step explanation:

4 0
3 years ago
Pythagorean theorem If l = 12 cm and m = 35 cm, what is the length of n?
poizon [28]
If n is the hypotenuse, then it is 37. L can't be the hypotenuse and if m is the hypotenuse then n is 32.878
4 0
3 years ago
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A bottle contains 14/16 ounces of apple juice. One serving of apple juice weighs 1/4 ounce. What is the total number of servings
andrew-mc [135]

Answer:

You have 3.5 Servings.

Step-by-step explanation:

1/4 x 4 = 4/16

14/4 = 3.5

8 0
2 years ago
Y=-x+Use the rule y= -x+7 to fill in the blank.<br> If (1,y) is on the graph, then y=
alexandr1967 [171]
Y=6

Reason:
(x,y) -> if 1 is where x is then x=1

-1+7=6
7 0
3 years ago
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A tunnel is built in form of a parabola. The width at the base of tunnel is 7 m. On
anastassius [24]

Given:

The width at the base of parabolic tunnel is 7 m.

The ceiling 3 m from each end of the base there are light fixtures.

The height to light fixtures is 4 m.

To find:

Whether it is possible a trailer truck carrying cars is 4 m wide and 2.8 m high is going to drive through the tunnel.

Solution:

The width at the base of tunnel is 7 m.

Let the graph of the parabola intersect the x-axis at x=0 and x=7. It means x and (x-7) are the factors of the height function.

The function of height is:

h(x)=ax(x-7)             ...(i)

Where, a is a constant.

The ceiling 3 m from each end of the base there are light fixtures and the height to light fixtures is 4 m. It means the graph of height function passes through the point (3,4).

Putting x=3 and h(x)=4 in (i), we get

4=a(3)((3)-7)

4=a(3)(-4)

\dfrac{4}{(3)(-4)}=a

-\dfrac{1}{3}=a

Putting a=-\dfrac{1}{3}, we get

h(x)=-\dfrac{1}{3}x(x-7)              ...(ii)

The center of the parabola is the midpoint of 0 and 7, i.e., 3.

The width of the truck is 4 m. If is passes through the center then the truck must m 2 m on the left side of the center and 2 m on the right side of the center.

2 m on the left side of the center is x=1.5.

A trailer truck carrying cars is 4 m wide and 2.8 m high is going to drive through the tunnel is possible if h(1.5) is greater than 2.8.

Putting x=1.5 in (ii), we get

h(1.5)=-\dfrac{1}{3}(1.5)(1.5-7)

h(1.5)=-(0.5)(-5.5)

h(1.5)=2.75

It is clear that h(1.5)<2.8, therefore the trailer truck carrying cars is 4 m wide and 2.8 m high is going to drive through the tunnel is not possible.

4 0
3 years ago
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