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
Vladimir [108]
4 years ago
7

PLEASE HELP ME!!!!

Mathematics
1 answer:
VARVARA [1.3K]4 years ago
3 0

Answer:

Step-by-step explanation:

MARK BRAINLIEST PLEASE ☺️☺️

First you multiply 20 by .15 and you get 3. Subtract 3 by 20 and you get 17. Now multiply $17 by 30 and you get 510. She spent $510 on 30 calculators

You might be interested in
What two number multiply to -132 and add to -1
EastWind [94]

Answer:

The two numbers can be -12 and 11, or 11 and -12.

Step-by-step explanation:

xy=-132

x+y=-1

-------------

x=-1-y

(-1-y)y=-132

-y-y^2=-132

-y^2-y-(-132)=0

-y^2-y+132=0

y^2+y-132=0

factor out the trinomial,

(y-11)(y+12)=0

zero property,

y-11=0, y+12=0,

y=0+11=11,

y=0-12=-12

x+11=-1 & x+(-12)=-1

x=-1-11=-12

x=-1-(-12)=-1+12=11

5 0
4 years ago
How would I find the area given these 4 points? Is there a formula that I just don't know​
Dmitrij [34]

Answer: No

Step-by-step explanation:

I can’t think of one but if you have a pegboard there is a formula called Pick’s Formula

8 0
4 years ago
Which pythagorean identity is correct?
Leni [432]

Answer:

The pythagorean identity that is correct is option B:

B. tan^2(theta)+1=sec^2(theta)

Step-by-step explanation:

The pythagorean identities are:

1.) sin^2(theta) + cos^2(theta) = 1

2.) tan^2(theta) + 1 = sec^2(theta)

3.) 1 + cot^2(theta) = csc^2(theta)

Then the pythagorean identity that is correct is option B:

B. tan^2(theta)+1=sec^2(theta)

3 0
4 years ago
Read 2 more answers
the length of a rectangle is 4/5 feet the width is 5/8 feet how much greater is the length of a rectangle than the width
Eva8 [605]
4/5(8)= 32/40
5/8(5)= 25/40
You have to get the same denominator to be able to subtract so multiply one fractions denominator by the other so it becomes the same, and vise versa.
32/40-25/40= 7/40 which cannot be simplified.
Answer= 7/40 greater than the width.
3 0
4 years ago
Jackie has fewer than 20 h to work on her jewelry. It takes her half an hour to make a necklace and an hour to make a bracelet.
Virty [35]
X = necklaces, y = bracelets

at least twice as many bracelets as necklaces
y > = 2x <===
x > 0 <=== 

half hour for necklace, 1 hr for bracelet...fewer then 20 hrs
0.5x + y < 20 <==




7 0
4 years ago
Read 2 more answers
Other questions:
  • How many miles did I run
    15·2 answers
  • Which is an accurate description of early Native Americans? A. many languages, but only one way of life and tribal organization
    11·2 answers
  • ........Help Please.......
    13·1 answer
  • Answer this question <br> Percent: increase / decrease
    7·2 answers
  • A penny and a nickel are tossed. Both are fair coins. Let X = 1 if the penny comes up heads, and let X = 0 otherwise. Let Y = 1
    10·1 answer
  • Which situation can be modeled by a function?
    10·1 answer
  • Use the given circle to find x
    10·1 answer
  • Which point is a solution to the inequality shown in this graph?<br> (3, 2)<br> 6<br> (-3,-6).
    10·2 answers
  • connie poured 200 milliliters of juice into a glass from a juice carton. She then poured 225 milliliters into a second glass. Wh
    8·1 answer
  • What does a equal? <br><br> (don’t just give the answer pls explain)
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!