1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
exis [7]
3 years ago
8

5(5z - 7), when z = -1

Mathematics
2 answers:
Karo-lina-s [1.5K]3 years ago
8 0

Answer: -60

Step-by-step explanation:

Image!!

Alchen [17]3 years ago
4 0

Answer:

5(5(-1)-7)

-25-35

-60

Step-by-step explanation:

You might be interested in
Tom is buying topsoil for the flower bed shown below. One bag of topsoil covers 151515 square meters. How many bags of topsoil d
exis [7]

Answer:

2 bags of topsoil.

Step-by-step explanation:

The attached figure shows a flower bed.

One bag of topsoil covers 15 square meters.

We need to find how many bags of topsoil does Tom need to cover his flower bed.

The area of the flower bed is :

A=\dfrac{1}{2}\times 12\times 5\\\\=30\ m^2  

Let he has to cover x bags of topsoil. So,

x = Area of flower bed/Area of 1 bag of top soil

x = 30/15

x = 2

Hence, he will need 2 bags of topsoil to cover his flower bed.

6 0
3 years ago
Can anyone help me with this
Nataliya [291]
To find surface area, we can use the equation:

SA=2lw+2wh+2lh, where:
l=10 in
w=3 in
h=7 in

SA=(2)(10)(3)+(2)(3)(7)+(2)(10)(7)
SA=60+42+140
SA=242 in²
5 0
3 years ago
If the ratio of purple marbles to orange marbles is 3 to 8, how many orange marbles will I have if I have 48 purple marbles?
sveticcg [70]

Answer:

You will have 128 orange marbles

Step-by-step explanation:

Set this up as an equation

Variable x = number of orange marbles

3/8 = 48/x

Cross multiply

3 × x = 8 × 48

3x = 384

Divide both sides by 3 to isolate the variable

3x ÷ 3 = 384 ÷ 3

1x = 128

x = 128

128 orange marbles

Check work:

Substitute the variable x for the answer

3/8 = 48/128

Cross multiply

3 × 128 = 8 × 48

384 = 384

If the numbers equal, the answer is correct

6 0
3 years ago
Read 2 more answers
11. In a sample of n=6, five individuals all have scores of X=10 and the sixth person has a score of x=16. What is the mean for
ahrayia [7]

Answer:

11

Step-by-step explanation:

Given that in a sample of n=6, five individuals all have scores of X=10 and the sixth person has a score of x=16

i.e. the data entries are

10,10,10,10,10,16

Sum = 66

No of items n = 6

Average = sum/no of entries

=\frac{66}{6} \\=11

Average is 11.

mean of this sample is 11

8 0
3 years ago
Write the ratio in fractional notation in lowest terms. 28 inches to 42 inches
ivolga24 [154]

28 to 42 means 28/42

We now reduce 28/42 to lowest terms.

28 ÷ 7 = 4

42 ÷ 7 = 6

We now have 4/6.

We now reduce 4/6.

4 ÷ 2 = 2

6 ÷ 2 = 3

Final answer: 2/3

7 0
3 years ago
Other questions:
  • Since life expectancy has increased in the last century, the number of Alzheimer patients has increased dramatically. The number
    6·1 answer
  • Kevin has $24 to buy a gift for his cousin. He found a gift of $22. With 5% sales tax added on, will Kevin have enough money to
    14·2 answers
  • Fred spent half of his allowance going to the movies. He washed the family car and earns 7 dollars. What is his weekly allowance
    9·1 answer
  • Find the following difference by changing into sums with multiplication by a negative number.
    5·1 answer
  • A man is walking a triangular path, partially represented by the vectors AB−⇀−=⟨0,10⟩ and CA−⇀−=⟨−12,0⟩ . If his distance is rep
    11·1 answer
  • Express this number in scientific notation.<br> 78 million
    6·2 answers
  • What is the slope of the line on the graph?
    12·1 answer
  • I NEED HELP
    6·2 answers
  • Help please i don’t understand
    15·1 answer
  • What property is shown below <br> if q=r and r=s, then q=s
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!