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Komok [63]
3 years ago
13

Sally can paint a room in 3 hours while it takes Steve 5 hours to paint the same room

Mathematics
1 answer:
Gelneren [198K]3 years ago
5 0
Wait so what’s the question then?
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What adds to -9, and multiplies to -70?
dybincka [34]
-14 and 5 (-14+5 = -9) and -14*5) = -70

Make me the brainliest answer.
4 0
3 years ago
Please help me with this math problem, it has fractions.
viktelen [127]

Answer:

if you multiply two negatives together, then the answer is positive, so -1/4 of -4 is just 4 / 4 which is 1

5 0
3 years ago
The graph shows a probability distribution. What is P(X<5)
Thepotemich [5.8K]

Answer:

P(x < 5) = 0.70

Step-by-step explanation:

Note:  The area under a probability "curve" must be = to 1.

Finding the sub-area representing x < 5 immediately yields the desired probability.

Draw a dashed, vertical line through x = 5.  The resulting area, on the left, is a trapezoid.  The area of a trapezoid is equal to:

 (average length)·(width, which here is:

  2 + 5

----------- · 0.02  =  (7/2)(0.2) =  0.70

      2

Thus, P(x < 5) = 0.70

7 0
3 years ago
Which statement is true
Alex

Answer: The means are equal.

Good Luck!

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
For what value(s) of k is the linear system consistent? (Enter your answers as a comma-separated list.)
AleksAgata [21]

Answer:

Step-by-step explanation:

Given

6x_1-9x_2=8

9x_1+kx_2=-1

The given system is AX=B can be represented by

\begin{bmatrix}6 &-9 \\ 9 & k\end{bmatrix}\begin{bmatrix}x_1\\ x_2\end{bmatrix}=\begin{bmatrix}8\\ -1\end{bmatrix}

The given system is consistent when determinant of A is not equal to zero

|A|

|A|=6k-(-81)=6k+81

k\neq \frac{-27}{2}

i.e. system is consistent for all value of k except k=\frac{-27}{2}

R-\frac{-27}{2}

                 

4 0
4 years ago
Read 2 more answers
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