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4 years ago

How do I answer the question ? I really don't know what to do.

Mathematics

2 answers:

lapo4ka [179]4 years ago

8 0

1. Joe did. 2. Alexandra didn't follow the order or operations P E M D A S

Eva8 [605]4 years ago

4 0

Joe answered the equation correctly. Alexandra didn't follow order of operations. (Multiply,divide,add,subtract) in that order..... I hope this makes sense to you

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HELP PLS!!!! IM GONNA GIVE YOU THE BRANLIEST ANSWER!!!

djverab [1.8K]

Answer:

Step-by-step explanation:

By counting the height ( frequency ) of each block and adding gives the number of students in total

20 - 24 → 5

24 - 28 → 6

28 - 32 → 5

32 - 36 → 2

36 - 40 → 7

Total = 5 + 6 + 5 + 2 + 7 = 25

4 0

3 years ago

I need help.<br> Math is really hard

alekssr [168]

Answer:

The value of x in terms of b is: $\mathbf{x=-\frac{6}{2b}}$

The value of x when b is 3 is: x = -1

Step-by-step explanation:

We are given the function: $-2(bx-5)=16$

First we need to find

The value of x in terms of b

We need to find value of x

$-2(bx-5)=16$

Multiply -2 with terms inside the bracket

$-2bx+10=16$

Subtract 10 from both sides

$-2bx+10-10=16-10\\-2bx=6$

Divide both sides by -2b

$\frac{-2bx}{-2b}=\frac{6}{-2b}\\x=-\frac{6}{2b}$

So, The value of x in terms of b is: $\mathbf{x=-\frac{6}{2b}}$

The value of x when b is 3

We have the equation for the value of x in terms of b:

$\mathbf{x=-\frac{6}{2b}}$

Put b = 3

$x=-\frac{6}{2(3)}\\x=-\frac{6}{6}\\x=-1$

So, The value of x when b is 3 is: x = -1

3 0

3 years ago

Sin40°-sin20°/cos220°-cos200=√3

Mumz [18]

Answer:

1.7320508

Step-by-step explanation:

7 0

3 years ago

if a shape is a regular pentagon with five sides, which of the following must be true? Check all that apply

julsineya [31]

Answer:

A. It has reflectional symmetry

B. It is symmetrical

D. It has five lines of symmetry

Step-by-step explanation:

we know that

A regular pentagon has 5 sides and 5 lines of symmetry. The number of lines of symmetry in a regular polygon is equal to the number of sides

Every regular polygon has reflectional symmetry

Regular polygons are symmetrical

therefore

A. It has reflectional symmetry ------> Is true

B. It is symmetrical -----> Is true

C. It has exactly one line of symmetry ----> Is false

D. It has five lines of symmetry -----> Is true

4 0

3 years ago

Read 2 more answers

am and Lou need a total of 1 foot of wire for a science project. Sam’s wire measured 8/12 foot long. Lou’s wire measured 7/8 foo

slamgirl [31]

Answer:

they have enough wire.

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers