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Sladkaya [172]
3 years ago
15

Need help please don't understand how to solve this problem

Mathematics
2 answers:
Umnica [9.8K]3 years ago
8 0
13 hundreds= 130 tens= 1300 ones
AlladinOne [14]3 years ago
5 0
13 hundreds = 130 tens = 1300 ones

6 hundreds = 60 tens = 600 ones

31 hundreds = 310 tens = 3100 ones
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What is the answer to 8x + 8y + 12
umka21 [38]
Simplifying
8x + 8y = 12

Solving
8x + 8y = 12

Solving for the variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-8y' to each side of the equation. 8x + 8y + -8y = 12 + -8y

Combine like terms: 8y + -8y = 0
8x + 0 = 12 + -8y
8x = 12 + -8y

Divide each side by '8'.
x = 1.5 + -1y

Simplifying x = 1.5 + -1y
3 0
2 years ago
What is the measures of the angles in a triangle?
Talja [164]

4 is 90

1 is 37

3

2 is 127

3 is 23

3 0
3 years ago
Please help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Wittaler [7]

Answer:

-4 5/12

Step-by-step explanation:

-23/3 + (-11/2) + 35/4

<em>Find a common denominator (12).</em>

-92/12 + (-66/12) + 105/12

<em>Reform the equation to have this as a single fraction.</em>

(-92 + (-66) + 105)/12

<em>Subtract 66 from -92 to get -158.</em>

(-158 + 105)/12

<em>Add 105 to -158 to get -53.</em>

-53/12

<em>Convert into a mixed number by dividing by 12.</em>

-4 5/12 (Choice A) is your answer.

6 0
3 years ago
Im not sure if there right or not
alina1380 [7]
They are both correct.
7 0
3 years ago
A tunnel is built in form of a parabola. The width at the base of tunnel is 7 m. On
uysha [10]

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

Since 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.

6 0
3 years ago
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