3 years ago

The second of two numbers is 3 less than twice the first. Their sum is 42. Find the numbers

Mathematics

1 answer:

alekssr [168]3 years ago

4 0

Answer: Its math.

Step-by-step explanation: {6,6}

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If 3 boxes weigh 10 pounds, how much do 4 boxes weigh?

Nataly_w [17]

Answer:

About 13.32 Pounds

Step-by-step explanation:

First. take the total weight of the three boxes and divide it by the number of boxes.

10/3 = 3.33 and so on

Now we know each box ways 3.33 pounds.

Now multiply 4 boxes by 3.33 pounds.

4 x 3.33 = 13.32

So the answer should be about 13.32 pounds.

8 0

2 years ago

Read 2 more answers

Solve the following simultaneous linear equations by the substitution method.

anyanavicka [17]

Answer:

p = 2 and q = 2

Step-by-step explanation:

hope this helps please like and mark as brainliest

5 0

2 years ago

A cell phone store sold 450 newly released cell phones in three hours. This was 30% of the number of cell phones sold that day.

Vitek1552 [10]

Answer:

we have 3 things here. 30% out of 100% of the 450 phones

In order to find the missing percent we multiply the 450 by 100 and divide its product by 30

The answer is 1500

Step-by-step explanation:

8 0

2 years ago

Factorize: (a+b)^2 + 4 (a+b)+ 4

pashok25 [27]

Factorized: (a + b + 2) ^2

3 0

2 years ago

The height of a parallelogram is 5 feet more than it's base. If the area of the parallelogram is 204 square feet, what is its ba

siniylev [52]

The base is x.
The height is 5 feet more than the base, so it's x+5.
The area of a parallelogram is the product of its base and its height. The area is 204 square feet.

$x(x+5)=204 \\
x^2+5x=204 \\
x^2+5x-204=0 \\
x^2+17x-12x-204=0 \\
x(x+17)-12(x+17)=0 \\
(x-12)(x+17)=0 \\
x-12=0 \ \lor \ x+17=0 \\
x=12 \ \lor \ x=-17$

The length of the base of a parallelogram must be a positive number, so x=12.

$\hbox{the base:} \\ x=12 \\ \\
\hbox{the height:} \\ x+5=12+5=17$

The base is 12 feet long, the height is 17 feet long.

8 0

2 years ago