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3 years ago

Heellllppppppppppppp

Mathematics

2 answers:

daser333 [38]3 years ago

8 0

Answer:

x = $\frac{1}{5}$ , y = 6

Step-by-step explanation:

5x + y = 7 → (1)

20x + 2 = y → (2)

Substitute y = 20x + 2 into (1)

5x + 20x + 2 = 7

25x + 2 = 7 ( subtract 2 from both sides )

25x = 5 ( divide both sides by 25 )

x = $\frac{5}{25}$ = $\frac{1}{5}$

Substitute this value into (2) and evaluate

20( $\frac{1}{5}$ ) + 2 = y

4 + 2 = y , so

y = 6

marin [14]3 years ago

8 0

Answer:

o_O wut the heck did I just witness here?

Step-by-step explanation:

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40°<br> 87°<br> Xº<br> Q<br> Image not to scale<br> 38°<br> Calculate the missing internal angle x.

bagirrra123 [75]

Q = 87 + 40

Q = 127

X + 127 + 38 = 180

X = 180 - 127 - 38

X = 15

Therefore we say X is 15

5 0

2 years ago

40/6 as a mixed number and in simpliest form

givi [52]

Answer is : 6 4/6
in simplest form is : 6 2/3

8 0

3 years ago

5. The mall and library are 8 miles apart. On a map, the two buildings are 2 inches apart. How many miles does 1 inch represent

sammy [17]

4 miles represent one inch on the map.

This is because since they are 8 miles apart, and 2 inches in the map, and you want to find out how many miles per inch. You divide 8 by 2 because you want to divide how many miles by how many inches so that you can get 2 parts. That's how you get four.
Now that you cut 8 miles into two parts, you have halves, and half of eight is 4. And 1 inch represents that half since 1 + 1 equals 2 and 4 miles represents each of the two parts since 4+4 equals 8.

5 0

4 years ago

Write the following as an algebraic expression. Then simplify.

Romashka [77]

Answer: A. 7x + 3

Concept:

Here, we need to know how to find the perimeter of a triangle

Perimeter (triangle) = s₁ + s₂ + s₃

s₁ = side one

s₂ = side two

s₃ = side three

Solve:

<u>Given information</u>

s₁ = 3x

s₂ = 3x + 3

s₃ = x

<u>Given expression</u>

P = s₁ + s₂ + s₃

<u>Substitute values into the expression</u>

P = (3x) + (3x + 3) + (x)

<u>Combine like terms</u>

P = (3x + 3x + x) + (3)

P = (6x + x) + 3

$\boxed{P_{triangle}=7x+3}$

Hope this helps!! :)

Please let me know if you have any questions

3 0

3 years ago

Graph g(t)=4sin(3t)+2 .

dsp73

<h2>Answer:</h2>

Shown in the figure below.

<h2>Step-by-step explanation:</h2>

We have the equation:

$g(t)=4sin(3t)+2$

So this is a sine function shifted 2 units upward. The midline of this function is $y=2$ . From the figure below, you can see that the first point lies on the midline at the pojnt $(0,2)$ . The second point lies on $(\frac{\pi}{6},6)$ , which is a maximum point and is the closest point to the first one.

8 0

3 years ago