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professor190 [17]
2 years ago
14

What's the value of x?

Mathematics
1 answer:
8090 [49]2 years ago
5 0
I got 110 but it might be wrong let me check.
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What is an equivalent ratio to 8:20 and<br> 2:5?
coldgirl [10]

Answer:

4:10.

Step-by-step explanation:

4:10 would be one.

5 0
3 years ago
A car's position is given by s(t) = {3 – 5t? + 7t hundreds of meters with t in minutes.
Nadya [2.5K]

Answer:

A) (1 s, 2.3 s)

B) (-4 m/s², 3.8 m/s²)

Step-by-step explanation:

The car's position which is the distance is given by the equation;

s(t) = t³ - 5t² + 7t

A) Velocity is the first derivative of the distance. Thus;

v(t) = ds/dt = 3t² - 10t + 7

At v = 0, we have;

3t² - 10t + 7 = 0

Using quadratic formula, we have;

t = 1 and t = 2.3

Thus, time at velocity of 0 is t = (1 s, 2.3 s)

B) acceleration is the derivative of the velocity. Thus;

a(t) = dV/dt = 6t - 10

At velocity of 0, we got t = 1 and t = 2.3

Thus;

a(1) = 6(1) - 10 = -4 m/s²

a(2.3) = 6(2.3) - 10 = 3.8 m/s

Thus, a(t) at v = 0 gives; (-4 m/s², 3.8 m/s²)

8 0
3 years ago
Jasmine thinks that the images are the same because they are both isosceles triangles. Do you agree with Jasmine why or why not?
lorasvet [3.4K]

Answer:

No, images are not same as  their dimensions are different although two sides in each of the two triangles are equal.

Step-by-step explanation:

Given: images of two isosceles triangles.

To check: if images are the same

Solution:

A triangle is a polygon made up of three sides.

An isosceles triangle is a triangle in which two sides are equal. Also, in an isosceles triangle, angles opposite to equal sides are equal.

The given images of two isosceles triangles A and B are not the same as their dimensions are different although two sides in each of the two triangles are equal.

6 0
3 years ago
If $4200 is invested into a savings account for which interest is compounded semiannually, and if the $4200 turns into $4900 in
serg [7]

x = interest rate

solve for x

4900 = 4200(1+x/2)^8

x = 0.0389 = 3.89%



6 0
3 years ago
Read 2 more answers
Discuss the conditions under which P(A or B)= P(A) + P(B) is true
Andrews [41]
That condition is true if P(A) and P(B) are independent of one another. For example, if I was pulling marbles out of a bag, if I am replacing the marbles back after I pull one out, then P(A or B) = P(a)+P(B).
4 0
3 years ago
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