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3 years ago

20. When a point lies on the x-axis, what do you know about its

Mathematics

1 answer:

musickatia [10]3 years ago

7 0

Answer:

that it should be the last alined coordinates.

Step-by-step explanation:

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Sally and Karl work at different jobs. Sally earns $7 per hour and Karl earns $5 per hour. They each earn the same amount per we

Lisa [10]

Answer:

Karl works 7 hours a week

Step-by-step explanation:

Step 1: Determine total amount that Sally earns

Total amount Sally earns=rate per hour×number of hours worked(h)

where;

Rate per hour=$7 per hour

Number of hours worked=h

Replacing;

Total amount Sally earns=(7×h)=7 h

Step 2: Determine total amount Karl earns

Total amount Karl earns=rate per hour×number of hours worked

where;

rate per hour=$5

number of hours worked=2 more than Sally=h+2

replacing;

Total amount Karl earns=5(h+2)

Step 3: Equate Sally's total earnings to Karl's total earnings and solve for h

7 h=5(h+2)

7 h=5 h+10

7 h-5 h=10

2 h=10

h=10/2

h=5

Karl works (h+2) hours=(5+2)= 7 hours

Karl works 7 hours a week

7 0

3 years ago

Help..................

Mariana [72]

Problem A,B,C, and D can be solved using 3*6=18 or 6*3=18

4 0

3 years ago

Read 2 more answers

5. At the beginning of an experiment, there are ten bacterial cells in Petri Dish A and five bacterial cells in Petri Dish B. Th

klasskru [66]

It’s going to be the 3rd one

8 0

3 years ago

Read 2 more answers

AC = BC, CP = CQ and <BPQ = 20°<br><ACP = ?°

Roman55 [17]

Answer: See attached image

Step-by-step explanation:

8 0

2 years ago

A survey of 100 families showed that 35 had a dog: 28 had a cat: 10 had a dog and a cat: 42 had neither a cat nor a dog nor a pa

nikdorinn [45]

<h2>Answer:</h2>

Option: C is the correct answer.

C. 5

<h2>Step-by-step explanation:</h2>

We will solve the following problem with the help of the Venn diagram.

Based on the Venn diagram we are asked to find the value of v i.e. those who have parakeet only.

From the information that:

35 had a dog we have:

x+y+10=35

i.e.

x+y=25

Also, based on the information :

28 had a cat we have:

u+z+10=28

i.e.

u+z=18

Also, 42 had neither a cat nor a dog nor a parakeet.

This means it cover the outer region of the three circles.

Total 100 families were surveyed it means that:

42+x+y+10+u+z+v=100

i.e. 42+25+10+18+v=100

i.e. 95+v=100

i.e. v=100-95

i.e. v=5

Hence, the number of families who have only parakeet are: 5

3 0

2 years ago