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3 years ago

Six times the sum of a number and twelve is forty

1 answer:

3 0

n is a number
"the sum of <span>a number and twelve" is (n+12)
"</span><span>Six times the sum of a number " is 6(n+12)

6(n+12)=40
6n+72=40
6n=40-72
6n= - 32
n=-32/6 = -16/3 or -5 1/3</span>

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Suppose that the world's current oil reserves is

SOVA2 [1]

Answer:

A) R = 1900 -24t

B) 1684 billion barrels

C) 79.17 years

Step-by-step explanation:

Reserves start at 1900 billion barrels and decrease by 24 billion barrels each year. The value for t=0 is 1900; the value for t=1 is 24 less.

R = 1900 -24t

For t=9, the reserves will be ...

R = 1900 -24(9) = 1900 -216 = 1684 . . . . billion barrels

The reserve will be 0 when ...

0 = 1900 -24t

24t = 1900 . . . . . add 24t

t ≈ 79.17 . . . . divide by 24

Reserves will be gone in about 79.17 years.

5 0

2 years ago

16x+29=45<br><br> solve for x<br><br> x=

blagie [28]

16x = 45 - 29
16x = 16
x = 16/16
x = 1

8 0

3 years ago

Read 2 more answers

Please help I’ll mark you as brainliest if correct!

schepotkina [342]

Increases by +2
Its arithmetic
Sixth number would be 17+2=19
Seventh is 19+2=21
Eighth is 21+2=23

6 0

1 year ago

Read 2 more answers

GEOMETRY PROOFS!

NeX [460]

From the given figure ,

RECA is a quadrilateral

RC divides it into two parts

From the triangles , ∆REC and ∆RAC

RE = RA (Given)

angle CRE = angle CRA (Given)

RC = RC (Common side)

Therefore, ∆REC is Congruent to ∆RAC

∆REC =~ ∆RAC by SAS Property

⇛CE = CA (Congruent parts in a congruent triangles)

Hence , Proved

<em>Additional comment:-</em>

SAS property:-

"The two sides and included angle of one triangle are equal to the two sides and included angle then the two triangles are Congruent and this property is called SAS Property (Side -Angle-Side)

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6 0

2 years ago

Select the ordered pair that is a solution to the function. (A point on the line.)?

soldier1979 [14.2K]

Answer:

-7

Step-by-step explanation:

first you plug in f(3) in the x so -2(3)= -6

then -6 - 1 = -7

6 0

2 years ago