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inn [45]
4 years ago
6

Tartan and Alastair both mow lawns each charges a flat fee to mow a lawn Table number of past time spent on money

Mathematics
1 answer:
sineoko [7]4 years ago
8 0
What's the question?
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HELP PLSSSSS
ludmilkaskok [199]

Answer:

a=21

AB=23.9

BC=19.5

CD=(23.9)

AD=19.5

Step-by-step explanation:

Each pair of parallel sides are equal in a parallelogram. Sense both pairs use the same variable we can just choose the easiest to solve which would be:

a-1.5=19.5

add 1.5 to both sides

a=21

now substitute 21 in for a in each equation.

AB=CD so

AB=23.9

BC=AD so

BC=19.5

CD=(21)+2.9 so

CD=(23.9)

AD is given so

AD=19.5

4 0
2 years ago
Rewrite 1/100,000,000 as a power of 10
yarga [219]
1/100,000,000 , note that 100,000,000 = 10⁸ , then:

1/100,000,000  = 1/10⁸
Remember that 1/aⁿ  = a⁻ⁿ

Hence 1/100,000,000 = 1/10⁸ = 10⁻⁸

3 0
3 years ago
Read 2 more answers
What is the value of a in the equation 5a-10b=45, when b=3?
Ainat [17]

Answer:5a-30=45


Step-by-step explanation:

So something times 5 minus 30 will give you 45


8 0
3 years ago
Read 2 more answers
Sandra's scores on the first 4 tests were 87%, 92%, 76%,and 89%. What is the minimum score she needs to make on the fifth test s
sergejj [24]

Answer:

Sandra need to score at least <u>56%</u> in her fifth test so that her average is 80%.

Step-by-step explanation:

Given:

First 4 test scores = 87%, 92%, 76%,89%

Average targeted = 80%

We need to find the minimum score she needs to make on fifth test to achieve average of at least 80%.

Solution:

Let the minimum score she needs to make in fifth test be 'x'.

Total number of test = 5

Now we know that;

Average is equal to sum of all the scores in the test divided by number of test.

framing in equation form we get;

\frac{87+92+76+89+x}{5}=80

Multiplying both side by 5 we get;

\frac{344+x}{5}\times 5=80\times 5\\\\344+x=400

Subtracting both side by 344 we get;

344+x-344=400-344\\\\x=56\%

Hence Sandra need to score at least <u>56%</u> in her fifth test so that her average is 80%.

5 0
3 years ago
Help please ASAP <br> It’s for math!!
insens350 [35]

Answer:

a or c

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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