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3 years ago

Ab + a - b when a = 3, and b = 7

Mathematics

2 answers:

Harrizon [31]3 years ago

5 0

Answer:

Step-by-step explanation:

ab + a - b (sub numbers)

(3)(7) + 3 - 7 (multiply)

21 + 3 - 7 (add/subtract left to right)

Roman55 [17]3 years ago

4 0

Answer:

Step-by-step explanation:

(3 × 7) + 3 - 7

21 + 3 - 7

24 - 7

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If a man drives 600km from Johannesburg to Durban. He starts his journey with a full tank of petrol. If the man drives at an ave

arlik [135]

Answer:

I think it's 5

Step-by-step explanation:

im not sure

but correct me if I'm wrong

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2 years ago

Find the slope of the line that passes through the points (5, 8) and (9, 4).

Alja [10]

Y2 - y1/x2 - x1 = slope

4 - 8/ 9 - 5 = slope

-4/4 = slope

-1 = slope

hope this helps :)

3 0

3 years ago

16. Solve for "x". a. 6 b. 100 c. 36

erastovalidia [21]

Answer:

A. 6

Step-by-step explanation:

Using the Pythagorean theorem which states that: Hypotenus² = Opposite² + Adjacent²

Where: hypotenus = 10, opposite = x, adjacent = 8

So:

${10}^{2} = {x}^{2} + {8}^{2}$

Solving for x

$100 = {x}^{2} + 64$

Collect like terms to make x the subject of formula

$100 - 64 = {x}^{2} →36 = {x}^{2}$

$36 = {x}^{2} ⟹ {x}^{2} = 36$

square root both sides of the equation to find the value of x

$\sqrt{ {x}^{2} } = \sqrt{36} →x = 6$

Therefore: Option A is correct

5 0

1 year ago

Solve the equation I will give brainly

Alika [10]

Answer:

answer: All real numbers, or No solutions

Step-by-step explanation:

okay, the equation says 4(x+4)=(4x+16)

if we apply 4 to the parenthesis we get 4*(x+4)=4x+16

so basically the equation is telling us 4x+16=4x+16, which gives us all real numbers or No solutions as the answer

5 0

3 years ago

Read 2 more answers

If a diameter intersects a chord of a circle at a perpendicular, what conclusion can be made? The diameter and the chord are con

yarga [219]

Answer:

The chord is bisected ⇒ 3rd answer

Step-by-step explanation:

* Lets revise some facts in the circle to solve the problem

- A chord in a circle is the segments whose endpoints lie on the

circumference of the circle

- A diameter of a circle is a chord passes through the center of the

circle

- The diameter is the longest chord in the circle

- Any line passes through the center of the circle and perpendicular

to a chord on the circle bisects it

* Lets solve the problem

∵ The diameter of the circle passes through the center of the circle

∵ The diameter intersects a chord of a circle at a perpendicular

∴ The diameter is perpendicular to the chord

∵ Any line passes through the center of the circle and perpendicular

to a chord on the circle bisects it

∴ The diameter bisects the chord

* The chord is bisected

8 0

3 years ago

Read 2 more answers