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
nata0808 [166]
3 years ago
8

The expression 7kl – 3k(4k + 2l) is equivalent to:​

Mathematics
1 answer:
koban [17]3 years ago
6 0

Answer:

- 12k² + kl

Step-by-step explanation:

Given

7kl - 3k(4k + 2l) ← distribute parenthesis by - 3

= 7kl - 12k² - 6kl ← collect like terms

= - 12k² + kl

You might be interested in
What number is 60% of 80?
Natasha_Volkova [10]

Answer: 48

.................

4 0
3 years ago
Read 2 more answers
In a certain​ chemical, the ratio of zinc to copper is 4 to 15. A jar of the chemical contains 750 of copper. How many grams of
nataly862011 [7]

Answer: it contains 200 grams of zinc.

Step-by-step explanation:

Ratio of zinc to copper is 4 to 15 = 4;15

Total ratio = 4+15= 19

We first find amount of both zinc and copper( the whole chemical)  which is equal to

ratio of copper / total ratio  x (the entire chemical--total grams of zinc and copper) =amount of copper

15/19 x X = 750

X= 750 X 19 / 15= 950 grams

To find amount of zinc in the chemical = ratio of zinc / total ratio x total amount of chemical

=4/19 x 950

=200 grams

3 0
3 years ago
Its algebra just forgot how to do the work please do the work 50 points
Ira Lisetskai [31]

Answer:

Step-by-step explanation:

f(2) = 6        (what multiplies 2 to equal 6?)*2 = 6

It seems like x gets multiplied by three. Let's check the next one:

f(-1) = -3

Ah ha! We were right. Let's check one more time:

2 * 3 = 6

-1 * 3 = -3

f(x) just means what is f when x is any number. This function that we covered above is: f(x) = 3x

5 0
3 years ago
In the diagram below, PA= <br>4, AB=2, and PC=3. Find<br>the length of PD.<br><br>​
Diano4ka-milaya [45]

Answer:

PD = 8

Step-by-step explanation:

PC x PD = PA x PB

3 x PD = 4 x (4 + 2)

3PD = 24

PD = 8

3 0
3 years ago
MIDDLE SCHOOL MATH- 4 QUESTIONS
Contact [7]

Answer:

( I am assuming that these are all fractions)

1. 14 \frac{4}{7}

2.  8

3. \frac{4}{15}

4. 5 \frac{8}{11}

Step-by-step explanation:

1. First you have to convert 15 into a fraction but it must have the same denominator causing the equation to look like 105/7 - 3/7= 102/7. But you cannot just leave the fraction like that it must be simplified 14 \frac{4}{7}

2. Three-fifths of an hour is 36 minutes. You would next multiply 5 by 60 which would the hours into minutes 5 x 60 = 300. You would then divide 300 by 36 which would give you 8.3333333333, which I just simplified it to 8

3. In order for you to multiply a fraction you would first multiply the top then the bottom. 12 x 6= 72, 15 x 18= 270. The fraction would look like 72/270 which is simplified to \frac{4}{15} .

4. First I changed the fractions into improper fractions causing the fraction to look like 36/8 x 14/11 (I got these answers by 8 by 4 then adding 4, then for the next fraction I multiplied 11 by 1 then added 3.) 36 x 14= 1224, 11 x 8= 88 the fraction would look like 1,224/88 you would simplify to 5 \frac{8}{11}

Hope this helps

Please tell me if I made any mistakes I enjoy learning from them.

6 0
3 years ago
Other questions:
  • A carpenter has a wooden stick that is 84 centimeters long. She cuts off 25% from the end of the stick . Then she cuts the remai
    11·1 answer
  • -2/3x+3/7=1/2<br> solve for x
    7·1 answer
  • A student showed the steps below while solving the equation by graphing. Step 1: Write a system of equations: Step 2: Use the ch
    11·2 answers
  • A bag contains one red one yellow one blue and one green marble what is the probability of choosing a green marble not replacing
    15·2 answers
  • Identify the following measures as either quantitative or qualitative:
    7·1 answer
  • PLEASE HELP!!!!!!!!!!!!!!!!
    5·1 answer
  • Ayesha, Laurel, Gemma, Reid, Emma, Gita, and Maas write their names on small pieces of paper and put them into a hat. A name is
    9·1 answer
  • Here is the charge at a car park in France.
    12·1 answer
  • Please help me!<br> Find the value of x for the rectangle.
    12·2 answers
  • What is the surface area?<br> 10 ft<br> 8 ft<br> 10 ft<br> 12 ft<br> 10 ft
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!