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3 years ago

I need some help I suck at Geometry. I will give Brainliest!!!

Mathematics

1 answer:

NARA [144]3 years ago

5 0

The first one is A.
second one B.
third one C.
fourth one C.
fifth one A.

hope it helps

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(2x-1+7x²)+(3+7x -3x²)

ANTONII [103]

Answer:

4 $x^{2}$ +9x+2

Step-by-step explanation:

You combine the $x^{2}$ terms, the x terms and the constants (the terms without variable/letters)

5 0

2 years ago

A student studied 18 hours in one week. What is the total number of hours he will have to study during the next week in order to

REY [17]

Answer:

Step-by-step explanation:

[(2 hours)/(1 day)](14 days)=(18+x)hours

Let's note that the unit of day is in the numerator and denominator. It cancels

[(2 hours)/(1 day)](14 days)=(18 hours)+(x hours)

(2 hours)(14)=(18+x)hours

Let's note that the unit of hours is in the numerators of both sides of the equation. It cancels

(2 hours)(14)=(18+x)hours

(2)(14)=18+x

28=18+x

10=x

HE WILL HAVE TO STUDY 10 HOURS.

4 0

3 years ago

there are 60 cows in a field .some are brown and the rest are white. Two thirds of the brown cows are less than one year old. Th

DIA [1.3K]

Answer: 0.7

Step-by-step explanation:

Let the number of white cows be x

Thus, the number of brown cows be (x+12)

Hence,

x+(x+12)=60

x+x+12=60

2x+12=60

2x+12-12=60-12

2x=48

Divide both parts of the equation by 2:

x=24 white cows

x+12=36 brown cows

The number of white cows are less than one year old:

$\displaystyle\\\frac{3}{4}(24)=\\\\\frac{3(24)}{4}=\\\\ 3*6=\\\\ 18\ white\ cows$

The number of brown cows are less than one year old:

$\displaystyle\\\frac{2}{3}(36)=\\\\ \frac{2(36)}{3}=\\\\ 2*12=\\\\24 \ brown \ cows$

The total number of cows are less than one year old:

$18+24=42\ cows$

Thus

Fraction of all the cows are less than one year old:

$\displaystyle\\\frac{42}{60}=\\\\\frac{6*7}{6*10}=\\\\\frac{7}{10} =\\\\ 0.7$

4 0

2 years ago

Here are the first terms of an arithmetic sequence

natita [175]

Step-by-step explanation:

I have attached the answer above

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3 years ago

Six diminished by twice a number is ten

alina1380 [7]

6-2a = 10
6-10 = 2a
a = -2

7 0

3 years ago