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3 years ago

A quadrilateral has exactly 2 congruent sides. Which quadrilateral types could it be? Which quadrilateral could it not be?

Mathematics

1 answer:

PtichkaEL [24]3 years ago

4 0

It could be square, rectangle, parallelogram, rhombus/diamond but, trapezoid could not be.

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A bag of dog food weighs 20 lb. 15% of the weight is oats.

snow_tiger [21]

Answer:

3lb of the dog food is oats

Step-by-step explanation:

20.0lb = 10.0lb+10.0lb

10.0/15% = 1.5lb

1.5lb+1.5lb = 3lb

4 0

4 years ago

The distance around a park is 3/2 miles. Noah rode his bicycle around the park for a total of 3 miles. How many times around the

zzz [600]

Answer:

2 times

Step-by-step explanation:

5 0

3 years ago

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List all the ways to select two members from S with repetition. The order in which the members are selected is not important. Fo

nexus9112 [7]

Answer:

15 ways

Step-by-step explanation:

We are given that a set S={E,F,G,H,J}

We have to find the number of ways to select two members from S with repetition.

Combination formula

$\binom{n}{r}=\frac{n!}{r!(n-r)!}$

We have n=5 , r= 2

Number of ways in which two members from S can be selected when repetition is not allowed= $5C_2=\frac{5!}{2!(5-2)!}$

Number of ways in which two members from S can be selected when repetition is not allowed= $\frac{5\times4\times3!}{2\times1 3!]$

Number of ways in which two members from S can be selected when repetition is not allowed= $5\times 2=10$

When a member repeat then combination

{E,E},{F,F},{G,G},{H,H},{J,J}

There are 5 combination when a member is repeat and select two members from S.

Total number of ways in which to select two members from S with repetition =10+5=15 ways

3 0

4 years ago

A homeowner is installing a swimming pool in his backyard. he want its length to be 4 feet longer than its width. then he wants

marishachu [46]

1. You have that:

- The homeowner<span> want the length of the swimming pool to be 4 feet longer than its width.</span>
- He wants to surround it with a concrete walkway 3 feet wide.
- He can only afford 300 square feet of concrete for the walkway.

2. Therefore, the tota area is:

At=L2xW2

L2 is the lenght of the walkway (L2=L1+3+3⇒L2=(W1+4+6)⇒L2=W1+10).
W2 is the width of the walkway (W1+3+3⇒W2=W1+6)

3. The area of the walkway is:

A2=At-A1

A2=300 ft²

4. Therefore, you have that the width of the swimming pool is:

A2=(W1+10)(W1+6)-(W1+4)(W1)
300=(W1²+6W1+10W1+60)-(W1²+4W1)
W1²+16W1+60-W1²-4W1-300=0
12W1-240=0
W1=240/12
W1=20 ft

5. And the length is:

L1=W1+4
L1=20+4
L1=24 ft

8 0

3 years ago

How do I find the slope of (2,3) and (5,9) by showing all of my work

suter [353]

(2,3) and (5,9) You are suppose to subtract the y axis from the x axis. You´re going to do 9 - 3 which is 6. Then, you are going to do 5 - 2 which is 3. You should get 6/3. This simplifies to 2. So, you slope is going to be 2. I hope this helps!

5 0

4 years ago

Read 2 more answers