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vodomira [7]
2 years ago
7

Simplify the expression 5a – 2b – 3 + 2b – 6a A. –4 B. 2a – 4b C. –a – 3 D. a – 3

Mathematics
1 answer:
ad-work [718]2 years ago
8 0

Answer:

C. -a-3

Step-by-step explanation:

Group like terms:

5a and -6a

-2b and +2b

-3

5a - 6a equals -a (-1a, but you don't write the 1)

-2b and + 2b = 0

Now you have -a and -3.

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28 girls and 38 boys volunteer to plant trees at a school. their teacher wants to put them in groups that have girls AND boys. h
Delvig [45]

Answer:

so 14 can go into 28, 2 times and 19 can go into 38 2 times so the techaer can make 2 group with 14 girls and 19 boys in each group.

Step-by-step explanation:

5 0
2 years ago
12) g = xy/c , for x
Paladinen [302]

Answer:

c=xy/g happy to help ya:)

Step-by-step explanation:

6 0
2 years ago
The area of triangle ABC is _____.
Marizza181 [45]
I FOUND YOUR COMPLETE QUESTION IN OTHER SOURCES.
 
SEE ATTACHED IMAGE.
 
Using Heron's Formula we can find the area of the triangle.
 A = root (s (s-a) * (s-b) * (s-c))
 s = (a + b + c) / 2
 Where,
 s: semi-perimeter
 a, b, c: sides of the triangle
 Substituting values:
 s = (15 + 16 + 20) / 2
 s = 25.5
 s = 26
 The area will be:
 A = root (26 * (26-15) * (26-16) * (26-20))
 A = 130.9961832
 A = 130 u ^ 2
 Answer:
 
The area of triangle ABC is:
 
C.
 
130 u ^ 2

5 0
3 years ago
Mom put plums and apples onto a plate. The ratio of the number of plums to the number of apples was 3:2. How many fruit did mom
Delvig [45]

Answer:

30 fruits

Step-by-step explanation:

Let

x ----> number of plums on the plate

y ----> number of apples on the plate

we know that

The ratio of the number of plums to the number of apples was 3:2

so

\frac{x}{y} =\frac{3}{2}

x=1.5y ----> equation A

After Ed took 6 plums from the plate, the number of plums remaining on the plate became the same as the number of apples

so

x-6=y ----> equation B

substitute equation A in equation B

1.5y-6=y

solve for y

1.5y-y=6\\0.5y=6\\y=12

Find the value of x

x=1.5(12)=18

therefore

Mon put on the table

x+y=18+12=30\ fruits

5 0
2 years ago
Read 2 more answers
How do you solve this
tekilochka [14]

Answer:

<h2>A</h2>

Step-by-step explanation:

gradient = (-3+2)/(0-3)

gradient = 1/3

slope intercept form : y = mx + b

m is the gradient which we have found to be 1/3

b is the y intercept that can either be -2 or - 3 (both the y coordinates)

therefore the equation would be y = 1/3 x - 3    (A)

hope this helps :)

3 0
3 years ago
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