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choli [55]
3 years ago
12

Evaluate. (jk−1)÷j when j=−4 and k=−0.7 Enter your answer as a decimal in the box.

Mathematics
1 answer:
Helga [31]3 years ago
5 0

Answer:

(jk - 1) / j

jk = (-4 x -0.7) = 2.8

(2.8 - 1) / - 4

1.8 / -4 = -0.45

Answer is -0.45 when j = -4 and k = -0.7

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What is 27.773 to its nearest tenth
Olenka [21]

Check the hundredth position after the decimal point.

This = 7  so we add 1 to the tenth position  so 7 becomes 7+1 = 8

Answer is  27.8  to nearest tenth

7 0
3 years ago
A student has a total of 233 points on three tests. The scores on the first and second tests are the same. The third score excee
skad [1K]

Answer:

Let the scores on the first two test be x

Let score for third test be 14 exceeds second( or first) = x + 14

Total = 233

x + x + (x + 14) = 233

3x + 14 = 233

3x = 219

x = 73

Score of the third test = x + 14 = 73 + 14 = 87

Therefore, the scores are 73, 73, 87

5 0
2 years ago
What two numbers add to 9 and multiply to -70
Alborosie
X, y - the numbers

The numbers add to 9 and multiply to -70.
x+y=9 \\
xy=-70 \\ \\
y=9-x \\
xy=-70 \\ \\
\hbox{substitute 9-x for y in the second equation:} \\
x(9-x)=-70 \\
9x-x^2=-70 \\
-x^2+9x+70=0 \\
-x^2+14x-5x+70=0 \\
-x(x-14)-5(x-14)=0 \\
(-x-5)(x-14)=0 \\
-x-5=0 \ \lor \ x-14=0 \\
x=-5 \ \lor \ x=14 \\ \\
y=9-x \\
y=9-(-5) \ \lor \ y=9-14 \\
y=14 \ \lor \ y=-5 \\ \\
(x,y)=(-5,14) \hbox{ or } (x,y)=(14,-5)

The numbers are -5 and 14.
4 0
3 years ago
I don't get this can somone help me please ​
wolverine [178]

Answer:

f = m+h

Step-by-step explanation:

just add h to both sides of the equation to isolate f.

Hope this helps!

7 0
3 years ago
What is the answer for x because i got x/2- 5=4
Firlakuza [10]

Answer:

x/2=5+4=9

x=9*2=18

x=18!

8 0
3 years ago
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