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3 years ago

3 4 (2a − 6) + 1 2 = 2 5 (3a + 20) what's the answer for a?

Mathematics

2 answers:

julsineya [31]3 years ago

4 0

The answers for A equals to 4.57

aivan3 [116]3 years ago

3 0

Answer:

Step-by-step explanation:

a=4.57

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F. The relationship between x and y is not a straight line. <br> Does anyone know the answer??

Allisa [31]

Answer:

$y=\frac{1}{3}x-1$

As the line equation represents a straight line, so the relationship between x and y is a straight line.

Therefore, option E is true.

Step-by-step explanation:

Taking two points from the given line

(3, 0)

(-3, -2)

Finding the slope between two points

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(3,\:0\right),\:\left(x_2,\:y_2\right)=\left(-3,\:-2\right)$

$m=\frac{-2-0}{-3-3}$

$m=\frac{1}{3}$

From the graph, the y-intercept can be calculated by setting the x=0 and then check the corresponding value of y.

at x = 0, y=-1

Thus, the y-intercept = -1

We know that the slope-intercept form is

$y=mx+b$

where m is the slope, and b is the y-intercept

substituting the values of m=1/3 and the y-intercept b = -1

$y=mx+b$

$y=\frac{1}{3}x+\left(-1\right)$

$y=\frac{1}{3}x-1$

As the line equation represents a straight line, so the relationship between x and y is a straight line.

Therefore, option E is true.

5 0

3 years ago

BRAINLIEST if right!<br><br> What is the solution of the system of inequalities

Vadim26 [7]

Answer:

Step-by-step explanation:

7 0

3 years ago

Find the values of x and y in the diagram.

SSSSS [86.1K]

Answer:

x = 15

y = 10

Step-by-step explanation:

ΔTUR is a 60°-60°-60° triangle because all angles are equal and 180/3 is 60

therefore, the angle adjacent to ∡R is 120 because it forms a straight line (which measures 180 degrees)

that means that angles T and S (which are both 3y°) plus angle R equal 180 so you can set up this equation to find y: 120 +6y = 180

6y = 60

y = 10

Because angles T and S are the same we know that TR and TS are also the same, so RT is 15

ΔTUR is equiangular which means it is also equilateral; so if RT is 15 then UT and UR are 15 also

If UT = 15, we can write this equation: x - 5 = 15 and find that x = 20

7 0

3 years ago

if a car is traveling at 60mph and the driver applies that brakes in an emergency situation, how much distance for does your mod

kramer

the question is incomplete

8 0

4 years ago

Lena is 10 years old. She asks her dad how old he is. He tells her that the lcm of their ages is 14 times the hcf of their ages.

strojnjashka [21]

Answer:

Step-by-step explanation:

Let x represent the HCF of the ages. Then we can have ax = 10 represent Lena's age, and bx can represent her dad's age.

The LCM will be abx = 14x, so we have ab = 14.

Factors of 14 are 1·14 and 2·7. Since the ratio of ages is between 30/10 = 3 and 45/10 = 4.5, we must have b/a in that range. This will be the case for ...

a=2, b=7

For a=2 and ax=10, we have x=5.

The dad's age is bx = 7·5 = 35.

5 0

3 years ago