MATHEMATICS HIGH SCHOOL

A) Ali travelled 40 kilometers in his car and it took him 50 minutes to complete the journey. How long will it take if he had to travel 100 kilometers in the same car?

Answers

Answer 1
Answer:

Answer:

2 hours and 5 minutes

Step-by-step explanation:

50/40=1.25 km/m

100*1.25=125 minutes

125 minutes= 2.08 hours= 2 hours and 5 minutes

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You have to simplify this without any negative exponents. Where would I start?
A family has three children. The oldest child is 4 years older than themiddle child, and the youngest child is 2 years younger than themiddle child. The sum of the ages of the children is 26.RHow many years old is the youngest child?years oldQ
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Trevor drew lines of best fit for two scatter plots, as shown. Which statement describes the placement of the lines Trevor drew?

What is the circumference of the following circle?
use 3.14 for pi for your answer
r=1

Answers

Answer: 6.28 units

Step-by-step explanation:

     The circumference of a circle can be found with the formula C = 2πr where r is the radius. Here, we are given the radius and a different value for π (pi).

Given:

  C = 2πr

Substitute given values:

  C = 2(3.14)(1)

Multiply:

  C = 6.28 units

          The circumference of the given circle is  6.28 units.

If triangle DEF has a 90° angle at vertex E, which statements are true? Check all that apply.Triangle DEF is an obtuse triangle.
The angle at vertex D is acute.
The angle at vertex F is obtuse.
Triangle DEF is a right triangle.
The angle at vertex D is obtuse.

Answers

draw a diagram (shown below as attachment)

check each option

1st one: obtuse triangle
osbuse means that the triangle has an angle more than 90 degrees
remember that all angles add to 180
90 is one
90+D+F=180
D+F=90
so those 2 mystery angles both have to be less than 90 so therefor none of them can be obtuse
not 1st option


2nd: angle at D is acute
acute means less than 90
so we remember that
D+F=90
no angle can be 0 so let's say F is a very small number like 0.0001
then D would be 89.9999
still less than 90, it is acute
this 2nd optin is right

3rd: angle at F is obtuse
wrong, from 1st one,  no obtuse angles
3rd option is wrong

4th: right triangle
duh, a right triangle has a right angle in it
90 degrees is a right angle
yes
4th optin is right

5th: D is obtuse
naw, fam. no obtuse angles here



the right answers are 2nd and 4th or
The angle at vertex D is acute and
Triangle DEF is a right triangle

Answer:

In other words, A, D.

Step-by-step explanation:

Find 25% less than 56

Answers

Answer:the answer is 31

Step-by-step explanation:

We are looking for a new number which is 25 less than 56.

We will get the new number by subtracting 25 from 56.

We write it down as:

56-25=31

And finally the solution for: What number is 25 less than 56?

is 31

In a heptagon, the sum of the measures of 4 of the angles is 478 degrees. What is the sum of the measures of the other 3 angles?

Answers

Given that the heptagon has a interior angles sum of 900, the 3 angles is 900 - 478 = 422 degree.

Let me get some help real quick big fella​

Answers

Answer:

cos B = 9/41

Step-by-step explanation:

Using trig functions, since we have a right angle,

cos theta = adjacent side/ hypotenuse

Cos B = 18/82

Dividing the right side by 2

cos B = 9/41
The answer is A
You have to use the trigonometric ratio as it is a right angle triangle.

What value of c makes x2 − 24x + c a perfect square trinomial?−144
−48
48
144
Unsubs

Answers

x² - 24x + c

perfect square trinomial: a² + 2ab + c²
a² = x² ⇒ x * x
2ab = -24x ⇒ 2(-12)x
c² = (-12)² = 144

x² - 24x + 144

The value of c to create a perfect square trinomial is 144.

Answer:

144

Step-by-step explanation:
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