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Verizon [17]
3 years ago
10

Rob did 15 push-ups on Monday, but on Tuesday he did 3 more than on Monday. What was the percent change?​

Mathematics
1 answer:
alisha [4.7K]3 years ago
8 0

Answer:

20%

Step-by-step explanation:

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Q11.
Kamila [148]

Answer:

Step-by-step explanation:

The area of a trapezium is given as;

Area = \frac{1}{2}(a + b)h

where: a is the length of the upper side, b is the length of its base and h is its height.

This implies that; a = x - 4, b = x + 5, h = 2x and area = 351

Thus,

351 =  \frac{1}{2}((x - 4) + (x + 50)) 2x

      = (x - 4 + x + 5) x

531 = (2x + 1) x

      = 2x^{2} + x

So that;

2x^{2} + x - 531 = 0

This gives a quadratic equation.

5 0
3 years ago
Evaluate in 5.<br> A.) 0.62<br> B.) 0.70<br> C.) 1.61<br> D.) 1.95
Len [333]

Answer:

  • <u><em>option C) 1.61</em></u>

Step-by-step explanation:

The question is to evaluate the natural logarithm of 5. Natural logarithms are logarithms with base <em>e</em>.

<em>e</em> is the irrational number equal to 2.71828182845904523536028747 ... (being irrational the decimals do not end and do not have a repetition period).

Logarithms are evaluated using tables or scientific calculators.

ln (5) = 1.6094379... it is also an irrational number, so it has infinite decimals with no repetition period.

So, rounding to two decimal numbers, ln (5) = 1.61, which is the option C).

6 0
3 years ago
Five coats cost for pound how much to 7 cakes cost
Elanso [62]
1 pound and 2/7 hoped this helped 
5 0
3 years ago
Can you please help me do this please?
Doss [256]

Answer:

80

Step-by-step explanation:

First move like terms to one side:

x/2=25+15

Notice that the sign (+ or -) changes when we switch it to the opposite side

x/2=40

Multiply both sides by 2...

x=80

3 0
3 years ago
Read 2 more answers
Robert has 4 times as many pennies as he does nickels. If Robert has $1.44 worth of pennies and nickels, how many nickels does h
dybincka [34]

9514 1404 393

Answer:

  16 nickels

Step-by-step explanation:

Robert can group his coins into groups consisting of 1 nickel and 4 pennies. The value of each group is 9¢, so the number of groups Robert can make is ...

  $1.44/$0.09 = 16 . . . groups

Since there is 1 nickel in each group, Robert has 16 nickels.

8 0
3 years ago
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