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4 years ago

Please help me with these questions I am stumped ☺️

Mathematics

2 answers:

nevsk [136]4 years ago

7 0

Answer: a and b

Step-by-step explanation:

castortr0y [4]4 years ago

3 0

A and B if u look closely u will see it’s a and b

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A) Write an equation in terms of x that represents the problem. (b) Solve the problem.

Andreas93 [3]

Answer:

Part 1: (n÷2)-7 = -12

Part 2: n = -10

Step-by-step explanation:

Part 1:

Let's first write "the quotient of a number and 2" using numbers and variables. Let "n" represent "a number". The key word that we see here is quotient, meaning we have to divide something by something else. "The quotient of a number and 2 means that "a number" is the dividend (number that is divided) and "2" is the divisor (number that divides the dividend). Therefore we obtain:

n÷2

The first part says "seven less than the quotient of a number and 2". The keyword here is less, meaning we have to use subtraction. Therefore:

(n÷2)-7

The last part says "is equal to -12". Therefore the whole expression we just wrote is equivalent to -12:

(n÷2)-7 = -12

Part 2

Remember the Order of Operations:

Parentheses

Exponents

M/D: Multiplication/Division (whichever comes first in the equation)

A/S: Addition/Subtraction (whichever comes first in the equation)

Start by adding 7 to both sides

(n÷2) = -5

Then, multiply both sides by 2

$\frac{n}{2}=-5\\n=-10$

Note: I used a fraction to display the division because it is easier to see why we have to multiply both sides by 2; to cancel out the denominator.

4 0

2 years ago

Please help! It’s Geometry!! ***WILL MARK BRAINLIST!!!!

Licemer1 [7]

Answer:

3) the coordinate for angle S is (-1, 10)

4) the coordinate for angle B is (-8, -8)

Step-by-step explanation:

I grab a paper and drew on it. Rotated from the origin at a counter clockwise motion. That's all. (Sorry not very explicit)

5 0

3 years ago

The ratio 50:60 in simplest form

Taya2010 [7]

Answer:

Divide both 50 and 60 by 10

6 0

4 years ago

Read 2 more answers

Please help me with this

AysviL [449]

Answer:

Step-by-step explanation:

Slope is (80,20)(120,30) is A 1/4

(80,20) 20 is 1/4 of 80

(120,30) 30 is 1/4 of 120

4 0

3 years ago

Please help I will give out brainliest

Nitella [24]

Answer:

i)x=0,x=1

ii)

$\frac{2}3} + \frac{\sqrt{40} }{6} \\\frac{2}3}-\frac{\sqrt{40} }{6}$

Step-by-step explanation:

so I did not use the graphs actually.

for the answer to question i), i wrote out the equation as given:

3x^2-3x+2=2

then, i subtracted the two from the right side of the equation to make the equation set equal to 0, and I got:

3x^2-3x+2-2=+2-2, which becomes 3x^2-3x=0

then, I used the quadratic method of taking out the greatest common factor, which in this case is 3x, and the equation becomes:

3x(x-1)=0

finally, for this equation, I set 3x=0 and x-1 =0 to get the solutions to this equation, as shown below

3x=0(divide both sides by 3 to get)x=0

x-1=0(add 1 to both sides to get)x=1

now for the second equation, I had no other choice but to use the quadratic formula to find the solutions.

so I set up the quadratic formula as shown:

$\frac{-(-4)+ or -\sqrt{(9-4)^2)-4(-2)(3)} }{2(3)}$

from there the equation gets simplified down to:

$\frac{4+ or -\sqrt{16-4(-6)} }{6}$

simplifying the formula even further gives us:

$\frac{4+ or -\sqrt{40} }{6}$

if we simplify the equation one last time, we get:

$\frac{2}{3} + or -\frac{\sqrt{40} }{6}$

therefore, the solutions to this equation are:

$\frac{2}{3} +\frac{\sqrt{40} }{6}\\ \frac{2}{3} - \frac{\sqrt{40} }{6}$

8 0

3 years ago