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Natalija [7]
3 years ago
12

Solve by substitution. 5x + 4y = -14 y = -7x - 15

Mathematics
1 answer:
ki77a [65]3 years ago
5 0

Answer:

(-2,-1)

Step-by-step explanation:

You might be interested in
-3x + 5y = 13<br> X + 4y = -10
Alex17521 [72]
X= -6
Y=-1
The x value is minus 6 and the y value is equal to minus 1
6 0
3 years ago
Mia uses 1/5 of a bag of gravel in the morning and 11/12 of a bag in the afternoon and how much gravel does she use in one day
wariber [46]

Answer:

She used 67/60 of a bag of gravel in one day.

Step-by-step explanation:

We must get a common denominator so we can add the two fractions.

Let's use 60!

1/5 = 12/60

11/12 = 55/60

Now we can add and get 67/60!

She used 67/60 of a bag of gravel in one day.

3 0
2 years ago
The greatest integer less than or equal to the given number; it is expressed: [[x]]. These are sometimes called step functions.
sergiy2304 [10]

Answer:

I think its, 5

Step-by-step explanation:

Becaus you take that number and its axcelerated calculation would be 5 in axis square root which is 3 and obviously 3+2 =5 so the wuarterining calculas is 5.

:D

5 0
3 years ago
Santiago is building a skateboarding ramp by propping the end of a piece of wood on a cinder block. If the ramp begins 63 centim
tensa zangetsu [6.8K]

Answer:

65 cm

Step-by-step explanation:

See the attached image.  The Pythagorean Theorem says in a right triangle, (leg)^2 + (leg)^2 = (hypotenuse)^2.

16^2+63^2=x^2\\256+3969=x^2\\4225=x^2\\x=\sqrt4225}\\x=65

3 0
2 years ago
Select all number combinations that COULD make a triangle
tester [92]

Answer:

2 cm, 9 cm, 10 cm

Step-by-step explanation:

To know if a combination is a triangle all you have to do is see if the combinations add up to 180

(2)(9)(10)=180 therefore it is a triangle.

All the other angles do not add up to 180 so they can't be triangles!!

(4)(10)(3) =120

(5)(6)(11) =330

(4)(5)(7) =140

4 0
2 years ago
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