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Luba_88 [7]
3 years ago
10

Evaluate the expression for a^2 + b ÷3 when a = 3 and b = 6

Mathematics
1 answer:
Flura [38]3 years ago
8 0

Answer:

11

Step-by-step explanation:

3^2 + 6/3

9 + 2

11

You might be interested in
What are the roots of y = x - 3x – 10?<br>-3 and -10<br>-2 and 5<br>2 and -5<br>3 and 10​
olga55 [171]

Answer:

  -2 and 5

Step-by-step explanation:

If roots of a quadratic are "a" and "b", then (x-a) and (x-b) are factors. Then the quadratic can be written as ...

  y = (x -a)(x -b) = x^2 -(a+b)x +ab

That is, the constant (-10) is the product of the roots, and the x-coefficient (-3) is the opposite of their sum.

In short, you want a solution pair that has a sum of 3. Only one answer qualifies: -2 and 5.

3 0
3 years ago
How many ounces of a 15% alcohol solution must be mixed with 8 ounces of a 20% alcohol solution to make a 17% alcohol solution?
Tasya [4]

Step-by-step explanation:

x = ounces of 20% solution

15% = 0.15

20% = 0.2

17% = 0.17

x × 0.15 + 8×0.2 = (8 + x)×0.17

x×0.15 + 8×0.2 = 8×0.17 + x×0.17

8×0.2 = 8×0.17 + x×0.02

8×0.03 = x×0.02

x = 8×0.03/0.02 = 12 ounces

we need to mix the 8 ounces of 20% with 12 ounces of 15% to get 17% alcohol (8 + 12 = 20 ounces of it).

7 0
2 years ago
The tomato plants in Ms.Lang's garden grow 2 inches every 3 days.How much will they grow in 15 days?
KiRa [710]
I answered this exact question here.

brainly.com/question/10500109
5 0
4 years ago
Find the value of x
erik [133]

Answer:

x= 1.74

Step-by-step explanation:

Area of triangle= ½ ×base ×height

We are given that the base is (x +4), the height is x and the area is 5.

5= ½(x +4)(x)

Multiply both sides by 2:

x(x +4)= 10

Expand:

x² +4x= 10

x² +4x -10= 0

Let's use the quadratic formula!

\boxed{x =  \frac{ - b± \sqrt{ {b}^{2}  - 4ac} }{2a} }

x =  \frac{ - 4± \sqrt{ {4}^{2}  - 4(1)( - 10)} }{2(1)}

x =  \frac{ - 4± \sqrt{56} }{2}

x= 1.74 or x= -5.74 (reject)

(nearest hundredth)

6 0
3 years ago
FIND THE SLOPE OF THE LINE...<br><br> A) 1/2<br><br> B) 2<br><br> C) - 1/2<br><br> D) -2
Ainat [17]

Answer:

The slope would be C) -1/2

Step-by-step explanation:

To find it, we need to use the slope formula and two points on the line. The points we'll use are (0, -3) and (2, -4)

m(slope) = (y2 - y1)/(x2 - x1)

m = (-3 - -4)/(0 - 2)

m = 1/-2

m = -1/2

8 0
4 years ago
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