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Tatiana [17]
3 years ago
6

Solve the system of Linear equations by elimination

Mathematics
1 answer:
Delvig [45]3 years ago
3 0
With these, you pick either equation and a variable to solve for; let's solve for x using the 2nd eq: 3x - 4y = 11; 3x = 4y - 11; x = (4/3)y - (11/3).

Now, plug x into the first eq: 3( (4/3)y - (11/3) ) + 4y = 5; 4y -11 +4y = 5; 8y = 16; y = 2.

To get an actual number for x, plug in y into either equation and you should get x = -1.
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What is the area of a sector with measure of arc equal to 90° and radius equal to 1 foot?
pashok25 [27]

Answer:

0.7855 square feet

Step-by-step explanation:

90/360×3.142×1 squared

=0.7855

6 0
2 years ago
Can someone help me please
Blizzard [7]

Answer:

Area=76.56 square feet

Step-by-step explanation:

area of a rectangle =base*height = 5ft*8ft= 40 square feet

area of a triangle=(base*height)/2 =(4ft*4ft)/2= 8 square feet

area of a square=base*height =4ft*4ft= 16 square feet

area of a circle =\pi* r^{2}[/tex]=3.14*2^{2}= 12.56 square feet

r = radius

Total area=(40+8+16+12.56)square feet

Total area=76.56square feet

3 0
3 years ago
To make 3/4 pound of mixed nuts, how many pounds of cashews would you add to 1/8 pound of almonds and 1/4 pound of peanuts?
Anna11 [10]

you will need 3/8 pounds of peanut.

3/8 + 1/4 + 1/8= 3/4

(ask me if you are confuse plz)

7 0
3 years ago
An architect built a scale model of a skyscraper using a scale in which 2 inches represents 48 yards. The height of the skyscrap
damaskus [11]
The correct answer is C, 15 inches. Please mark Brainliest if helpful. Thanks
6 0
2 years ago
Help I’m so confused
velikii [3]

Answer:

5x: linear; monomial

-7: constant; monomial

x^2 + 4: quadratic, binomial

x^2 - 3x + 11: quadratic, trinomial

2x - 9: linear, binomial

Step-by-step explanation:

Name using degree: just count the highest number of variables in a single term. if it's 0, its a constant polynomial, if it's 1 it's linear, 2 quadratic, 3 cubic

Name using number of terms: just count the number of "things" added or subtracted. If there's one, it's a monomial, two: binomial, three: trinomial.

6 0
2 years ago
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