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makvit [3.9K]
3 years ago
10

HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2 times 5" alt="(43-20)-2 times 5" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
fiasKO [112]3 years ago
8 0

Answer:

3

Step-by-step explanation:

(43-20)-2*5

Step 1: 43- 20= 13

Step 2: 2*5 = 10

Step 3: 13 - 10 = 3

PEMDAS

mezya [45]3 years ago
6 0
100 bc that’s the answer
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vredina [299]
There are 2 options to solve that.
1. The first one is by derivatives. 
f(x)=x^2+12x+36
f'(x)=2x+12
then you solve that for f'(x)=0
0=2x+12
x=(-6)
you have x so for (-6) solve the first equation, then you find y
y=(-6)^2+12*(-6)+36=(-72)
so the vertex is (-6, -72)
2. The second option is to solve that by equations:
for x we have:
x=(-b)/2a
for that task we have
b=12
a=1
x=(-12)/2=(-6)
you have x so put x into the main equation
y=(-6)^2+12*(-6)+36=(-72)
and we have the same solution: vertex is (-6, -72)

For next task, I will use the second option:
y=x^2-6x
x=(-b)/2a
for that task we have
b=(-6)
a=1
x=(6)/2=3
you have x so put x into the main equation
y=3^2+(-6)*3=(--9)
and we have the same solution: vertex is (3, -9)

3 0
3 years ago
A race car travels at a speed of 230 miles per hour. The race track on which the car is competing is 400 miles long. About how l
olga nikolaevna [1]
To solve for this we will be using the formula S = D/T

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First we need to re-arrange this formula to solve for time

T= D/S

T = 400/230

T=1.74 hours

.74 hours is close enough to .75 that we can say it is 45 minutes

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3 years ago
Eight more then seventimes a number (x) is atleast twenty nine
Mademuasel [1]

Answer:A number increased by seventeen is equal to seventy-three. x + 17 = 73

Some number decreased by seven is thirty-three. x - 7 = 33

A number increased by twelve is forty. x + 12 = 40

A number increased by fifteen is sixty-two. x + 15 = 62

Eight less than a number is nine. x - 8 = 9

A number divided by 11 is 4. x/11 = 4

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The difference of a number and twelve is thirty-four. x - 12 = 34

Step-by-step explanation:

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2 years ago
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