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Margaret [11]
3 years ago
9

−6k + 7k

Mathematics
1 answer:
creativ13 [48]3 years ago
3 0

Answer:

1 is k

2 is 12r minus 20

3   10n - 13

4     -14x

5    -11r

Step-by-step explanation:

think you have to simplify

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3/4x^2+8x+20=0 factor
elena-s [515]

\frac{3}{4}  {x}^{2}  + 8x + 20 = 0
multiplied by 4
3 {x}^{2}  + 32x + 80 = 0 \\ (3x + 20)(x + 4) = 0 \\ so \: x =  -  \frac{20}{3}  \: or \: x =  - 4
6 0
3 years ago
Someone please help
kogti [31]

Answer:

I'm not 100% but I think it could be x4 and then +5?

Step-by-step explanation:

5 0
3 years ago
What integer values satisfy both inequalities? − 2 < x < 3 − 2 ≤ x < 2
NARA [144]

Given:

The inequalities are:

-2

-2\leq x

To find:

The integer values that satisfy both inequalities.

Solution:

We have,

-2

-2\leq x

For -2, the possible integer values are

x=-1,0,1,2          ...(i)

For -2\leq x, the possible integer values are

x=-2,-1,0,1        ...(ii)

The common values of x in (i) and (ii) are

x=-1,0,1

Therefore, the integer values -1, 0 and 1 satisfy both inequalities.

6 0
3 years ago
While mining, John found a large metal bar that contained 15 pounds of zinc. John also determined that the bar was 60% zinc. Wha
finlep [7]

Answer:

The total weight of the metal bar in pounds is 25 pounds

Step-by-step explanation:

Now, we have a metal bar which has a content of 60% zinc corresponding to 15 pounds.

Mathematically, let’s say the total weight of the metal composite is x pounds. It is 60% of this that is 15 pounds which is the content of the zinc

Mathematically;

60/100 * x = 15

60x = 15 * 100

60x = 1500

x = 1500/60

x = 25 pounds

4 0
3 years ago
Pls Help: I need help
Anna11 [10]

Answer: C

Step-by-step explanation: 0.571 is greater than 0.4. Therefore, 4/7 is greater than 2/5 and the answer to the question "Is 4/7 greater than 2/5?" is yes. Note: When comparing fractions such as 4/7 and 2/5, you could also convert the fractions (if necessary) so they have the same denominator and then compare which numerator is larger.

3 0
3 years ago
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