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
Mumz [18]
3 years ago
5

Name:

Mathematics
1 answer:
Radda [10]3 years ago
6 0

Answer:

length is 10, width is 7

Step-by-step explanation:

Area of a rectangle = length * width = lw

Area is known to be 70

length = twice width - 4 = 2w-4 = l

width=w

so A = lw = (2w-4)w = 70

(2w-4)w=70

2w^2-4w=70

2w^2-4w-70=0, divide by 2

w^2 - 2w - 35 = 0, not sure how your class solves these, I see visually

(w-7)(w+5)=0

w=7 or w=-5, -5 makes no sense in the real world (negative length), so w=7

l = 2w-4 = 2(7)-4 = 14-4 = 10

You might be interested in
Please help me answer this, I don't get what I'm supposed to do TvT
kompoz [17]

Answer:

You save 86 cents per pound.

Step-by-step explanation:

According to the given problem, grocery store B charges chicken 5 pounds of chicken for $38.20. Consider finding the unit price:

To find the unit price of any item, do the following calculation:

Total Price / Total amount = $$$ per amount.

The unit price of store b is \frac{38.20}{5}=7.64 . In other words, every pound of chicken costs $7.64 at store b.

For store a, we are provided with a table. Given how the question is being asked, we should <u>expect a higher unit price</u>. We can take any charge to find the unit price since the price should be consistent no matter how many pounds you buy. I will calculate the first row:

\frac{12.75}{1.5}=8.5

In other words, every pound of chicken costs $8.50 at store a. <u>This price is higher</u>. You can verify this is the correct unit price by multiplying the unit price with any amount of pounds provided at the table. You should get the total cost.

So, now that we have both unit prices, we can calculate the difference to find out how much we save per pound when choosing store b:

8.50-7.64=0.86.

6 0
3 years ago
What are the answers to these aswell mb?
docker41 [41]

Answer:

4 is D = 23

Step-by-step explanation:

the coefficient is the number before the letter

5 0
3 years ago
Gilbert bought 3 shirts for $15.90 each, including tax. How much did he spend
Nezavi [6.7K]
15.90 times 3 equals your answer  47.70 hope I helped
6 0
3 years ago
Read 2 more answers
Algebra 2: PLEASE HELP ME!!
vfiekz [6]

Looks more like Trig than Algebra II

They want us to apply the sum angle formula to \sin(x + \frac{5 \pi}{6})

5π/6 is 150°; I find it easier to think in degrees.

When the tangent of x is 3/4 that's a right triangle with opposite 3, adjacent 4 so hypotenuse 5. So a sine of 3/5 and a cosine of 4/5, both positive because we're told x is in the first quadrant.

The sine sum angle formula is

\sin(a+b) = \sin a \cos b + \cos a \sin b

\sin(x+\frac{5\pi}{6}) = \sin x  \cos \frac{5\pi}{6} + \cos x \sin \frac{5\pi}{6}

We know sin 150° = sin 30° = 1/2 and cos 150° = - cos 30° = -√3/2

\sin(x+\frac{5\pi}{6}) = \frac 3 5  (- \sqrt{3}/2)  + \frac 4 5 (1/2)

\sin(x+\frac{5\pi}{6}) = \dfrac{ 4- 3\sqrt{3}}{10}

Third choice

3 0
3 years ago
Teresa wrote this expression to describe the total distance she was going to swim during two swim classes.
frez [133]
I think the answer is the second one, Tessa wasn't sure how far she would swim during the first class. She would swim 3 laps during the second class. The question is confusing, because the equation s+3 is supposed to be the DISTANCE she swam in 2 classes. The problem didn't specify that distance equals laps, but I think the answer is correct
5 0
4 years ago
Other questions:
  • If you horizontally stretch the quadratic parent function, f(x) = x2, by a factor of 5, what is the equation of the new function
    5·1 answer
  • Find the point, M, that is two-sevenths of the distance from A(-9, 2) to B(-2, -12).
    10·1 answer
  • answer asap please!!!!!A recipe requires 3/8 cup of sugar for each cup of flower used. If a baker uses 10 cups of flower, what i
    11·2 answers
  • What times itself 4 times gets you 10000
    8·2 answers
  • 40 sweater to 33% discount
    13·1 answer
  • What's the product of 3 2⁄3 and 14 2⁄5 ?
    9·2 answers
  • Can someone PLEASE help me with 4 and 5??? I’m legitimately struggling.
    5·2 answers
  • If arc BC is 42° and angle 5 is 32°, what is the measure of arc DE?
    5·1 answer
  • Two lengths are in ratio 7:8.if the first length is 273. What amount is the second length
    5·1 answer
  • PLEASE HELP quickly ​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!