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3 years ago

Which of the following are mathematical sentences? Check all that apply.

Mathematics

2 answers:

zepelin [54]3 years ago

6 0

C,d,e i think and hope this could help you

shutvik [7]3 years ago

6 0

A and F are not math'l sentences; they're just numbers.

B, C, D and E all comment on the equality of two sides of given equations and are thus math'l sentences. For example: "10 times some number r equals 40."

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Help me please no one is answering i need help on math :(

Pani-rosa [81]

Answer:

3 3

6 9

9 15

12 21

Step-by-step explanation:

For the time add 3 each time

For the distance add 6 each time

3 0

3 years ago

Read 2 more answers

Which of the following is equivalent to 2/9

iragen [17]

Answer:

B would be the answer:))

Step-by-step explanation:

Divide 2 by 9

5 0

2 years ago

Read 2 more answers

Suppose that a family wants to increase the size of the garden which is currently 16 feet long and 8 feet wide without changing

Cloud [144]

Answer:

See below

Step-by-step explanation:

Sides of the garden

16 feet and 8 feet

New dimensions of the garden

16 + 2x and 8 + x

1. The area of the new garden

(16 + 2x)(8 + x) =
2x^2 + 32x + 128

2. The difference in area

2x^2 + 32x + 128 - 16*8 =
2x^2 + 32x

3. x= 2 effect on the area

2*2^2 + 32*2 =
8 + 64 =
72 ft²

4. Area difference = 160

2x^2 + 32x = 160
x^2 + 16x - 80 = 0
Solving we get positive root of 4 ft

5. Area difference = 4 times

2x^2 + 32x = 128*3
2x^2 + 32x - 384 = 0
x^2 + 16x - 192= 0
Solving we get positive root of 8 ft

3 0

3 years ago

Find the 52nd term for the following sequence. 16,6,-4,-14....

nikklg [1K]

I think it’s D, sorry if I’m wrong.

8 0

3 years ago

hi i'm really struggling with this and its due later today! If someone could show the work of how to do it and the answer that w

GuDViN [60]

Answer:

$\frac{-5 \pm \sqrt{13} }{6}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

$\frac{-5 \pm \sqrt{5^2-4(3)(1)} }{2(3)}$

Step 2: Evaluate

Evaluate Exponents: $\frac{-5 \pm \sqrt{25-4(3)(1)} }{2(3)}$
Evaluate Multiplication: $\frac{-5 \pm \sqrt{25-12} }{6}$
Evaluate Subtraction: $\frac{-5 \pm \sqrt{13} }{6}$

8 0

3 years ago