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Alinara [238K]
3 years ago
8

Math Review 7th Grade. 2 Parts

Mathematics
2 answers:
miv72 [106K]3 years ago
8 0
Here is the answer Ik 7th grade can be hard sometimes

Lisa [10]3 years ago
6 0

Answer:use a cac

Step-by-step explanation:i would do that but I’m verry busy so I would use a cac

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Umm is this right or wrong and if it's wrong can you tell me the right answer?
MA_775_DIABLO [31]

Answer:

30

Step-by-step explanation:

d=√(24²+18²)=6√(4²+3²)=6√(16+9)=6√(25)=6×5=30

3 0
3 years ago
3 over 28 × 8 over 15 =
Natalka [10]

Answer:

2/35 or 0.05714285714

Step-by-step explanation:

3/28×8/15 Cross simplify

1/28×8/5

1/7×2/5

1×2/7×5

2/35

4 0
3 years ago
What is 16344 times 8362 this is home work
Svetlanka [38]
136,668,528 is the answer I got I hope this helps
8 0
3 years ago
Read 2 more answers
Give an example of dividing a negative and a positive
Zarrin [17]

ok like -24/3= -8

or -12/-4=3

8 0
4 years ago
Read 2 more answers
Use the intercepts of the following quadratic curve to find its graph.y = -1/2x^2 -3/2x+2
Solnce55 [7]

The correct graph is fourth option

Explanation:\begin{gathered} \text{The quadratic function:} \\ \text{y = }\frac{-1}{2}x^2\text{ - }\frac{3}{2}x\text{ + 2} \end{gathered}

Using the intercepts: we have x-intercept and y-intercept

To get x intercept, we will equate the function to zero. That is y = 0

\begin{gathered} 0\text{ = }\frac{-1}{2}x^2\text{ - }\frac{3}{2}x\text{ + 2} \\ mu\text{ltiply through by 2:} \\ 0=-x^2\text{ - 3x + 4} \\ x^2\text{ + 3x - 4 = 0} \\ x^2\text{ - x + 4x - 4 = 0} \\ x(x\text{- 1) +4(x - 1) = 0} \\ (x\text{ + 4)(x - 1) = 0} \\ x+4\text{ = 0 or x - 1 = 0} \\ x\text{ = -4 or x = 1} \end{gathered}

x intercepts are x = -4 and x = 1

This means the line will cross the x axis at two points: x = -4 and x = 1

To get y-intercept, we will equate x to zero:

\begin{gathered} \text{y = }\frac{-1}{2}(0)^2\text{ - }\frac{3}{2}(0)\text{ + 2} \\ y\text{ = 0 - 0 + 2} \\ y\text{ = 2} \end{gathered}

y-intercept = 2

This means the line will cross the y axis at y = 2

The correct graph is fourth option

8 0
1 year ago
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