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
Schach [20]
2 years ago
11

D^2 + 2d - 8 = 0 explain plz

Mathematics
1 answer:
schepotkina [342]2 years ago
7 0

Answer:

d^2 +2d-8=0

first pick two numbers which add up to make +2 and by multiplying those two numbers they should be able to create -8.

so for example 4 and 2

4-2=2

4 x -2= -8

so now factorise:

d^2 +2d-8=0

d^2+4d-2d -8=0

d(d+4)-2(d+4)=0

d+4=0       d-2=0

d=-4          d=2

Step-by-step explanation:

You might be interested in
Joanna wants to buy a backpack that costs $37.98. The sales tax rate is 8.75%. Estimate the amount of sales tax that Joanna will
IRINA_888 [86]

Answer:

The amount of sales tax Joanna will pay is $3.323

Step-by-step explanation:

Given:

Cost of the backpack =  $37.98

Sales tax = 8.75%

To Find:

Amount of sales tax that Joanna will pay  = ?

Solution:

Sales tax imposed by the government on the goods that are sold or on the services that is provided. It is collected by the seller who sells the goods

Sales tax  =\frac{\text{sales tax percentage}}{100} \times price

On Substituting the values

Sales tax  = \frac{8.75}{100} \times 37.98

sales tax  = 0.0875 \times 37.98

sales tax  = 3.323

3 0
2 years ago
How is multiplication using partial products different from multiplication using regrouping? how are they similar?
Nitella [24]
Using partial products is rounding numbers to get an estimate. using regrouping is multiplying numbers to find an exact product. they are similar because in both strategies you multiply 2 find a product.


Hopefully this helps!!
4 0
3 years ago
A ratio is?
Rama09 [41]
In mathematics, a ratio<span> is a relationship between two numbers indicating how many times the first number contains the second. For example, if a bowl of fruit contains eight oranges and six lemons, then the </span>ratio<span> of oranges to lemons is eight to six (that is, 8:6, which is equivalent to the </span>ratio<span> 4:3\

</span>
8 0
3 years ago
What is the y intercept ​
Sonbull [250]

Answer: (0,4)

Step-by-step explanation: Its the point that intrrcepts the y-axis hence the name

3 0
2 years ago
Read 2 more answers
Mount Kilimanjaro is the highest mountain peak in Africa with an elevation of 19,341 feet. What is the
s344n2d4d5 [400]

Answer:

it is 40

Step-by-step explanation:

because 4 is in the tens place value off  that number so then i think the answer is 40

8 0
3 years ago
Other questions:
  • What is the difference between factoring and solving ?
    6·1 answer
  • if the length of the longest side of a right triangle is 10 inches and one of the angles is 60 degrees, what is the length in in
    9·1 answer
  • The length of a rectangle is 4 units more than its width. The area of the rectangle is 25 more than 4 times the width. What is t
    6·1 answer
  • Lindsay has eight more stickers than Whitney. W represents the number of stickers Whitney had. Which expression represents the n
    11·2 answers
  • Jose Rodriguez's checking account had a starting balance of $1,234.56. He wrote a check for $115.12 for plumbing supplies and a
    11·2 answers
  • Linda gets paid $80 per day. Unfortunately Linda went home sick after working 1/3 of the day on Friday. At her company they don’
    8·1 answer
  • (Time expired.) The graph shows the system of equations below.
    11·1 answer
  • Find the median of the given data 60cm,56cm,45cm,50cm,54cm,51cm,52cm,48cm,46cm,53cm​
    15·1 answer
  • 39.800 000 in scientific notation?​
    6·1 answer
  • The sun has a radius of 4.32 X 10 5 miles question ( need a answer )
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!