(13x+14)(6x-5)=0
78x²-65x+84x-70=0
78x²+19x-70=0
It was equation.
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Factoring⇒ a×c=78×(-70)=-5460
84×(-65)=-5460
84+(-65)=19 which is b
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78x²+84x-65x-70=0
6x(13x+14)-5(13x+14)=0
(13x+14)(6x-5)=0
13x+14=0 6x-5=0
13x=-14 6x=5
x=-14/13 x=5/6
Two solution X=-14/13;5/6
Not sure if you have an answer choice but with my guess distribute the sums and it should leave an expression of 8X+28
a. 22. 79 - amount
b. 129 - amount
c. 358. 3 - base
d. 40. 65% - percent
e. 2. 58% - percent
<h3>
How to determine the values</h3>
It is important to note that a percentage is the number or ratio expressed as a fraction of 100.
It is denoted using the percent sign, "%"
a. What number is 53% of 43
= 53/ 100 × 43
= 0. 53 × 43
= 22. 79
b. 43% of 300
= 43/ 100 × 300
= 129
c. 12% of what number is 43
12/ 100 × x = 43
x = 43 × 100/ 12
x = 358. 3
d. 43 is what percent of 106
43/106 × 100/ 1
4300×/ 106
40. 5%
e. What percent of 43 is 6
43/ 100 × 6
2.58%
Thus, the percentage of a value is that value divided by 100
Learn more about percentage here:
brainly.com/question/24877689
#SPJ1
9514 1404 393
Answer:
- e ≈ 9.608
- D ≈ 46.5°
- F ≈ 38.5°
Step-by-step explanation:
The only given angle is between the two given sides, so the Law of Cosines must be used to find the side opposite the angle. It tells you ...
e² = d²+f² -2df·cos(E)
e² = 7² +6² -2·7·6·cos(95°) ≈ 92.321082
e ≈ 9.608
The remaining angles can be found from the law of sines.
sin(D)/d = sin(E)/e
D = arcsin(d/e·sin(E)) ≈ arcsin(7/9.608·sin(95°)) ≈ 46.5°
F = 180° -95° -46.5° = 38.5°
Answer:
B
Step-by-step explanation:
Plug in a x-value and see which table matches the result. Plug in 1.
f(x) = 7 - 4.5x
f(1) = 7 - 4.5(1)
f(1) = 7 - 4.5
f(1) = 2.5
The table that matches an input of 1 with an output of 2.5 is B.
