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Natasha_Volkova [10]
4 years ago
12

Please some one help me with this i don't know how to do these three problems

Mathematics
1 answer:
AysviL [449]4 years ago
3 0
1)can't see the illustration 
2) -2+10=8  and-4+12=8
3) 123-180= -57  185-255=-70
Bart has -57 points and Sam has -70 points  which means that  Bart won the game because after adding up the sums  their games Bart has a total of -57 and Sam has a total of -70  and -57 is higher then -70.
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The quadrilateral is a rhombus.<br> If EF = 13 and DF = 18, find EH to the nearest tenth.
-Dominant- [34]

Answer:

EH = 9.4

Step-by-step explanation:

A rhombus is a quadrilateral with equal length of sides.

Given that,  EF = 13 and DF = 18

⇒ DH = HF = \frac{18}{2}

             = 9

The property that the diagonals of a rhombus are at right angle to each other.

Thus, applying the Pythagoras theorem, we have;

/hyp/^{2} = /adj1/^{2} + /adj2/^{2}

(EF)^{2} = (EH)^{2} + (HF)^{2}

(13)^{2} = (EH)^{2} + (9)^{2}

169 =  (EH)^{2} + 81

(EH)^{2} = 169 - 81

           = 88

EH = \sqrt{88}

      = 9.381

The length EH is 9.4

3 0
3 years ago
Mr. Williams invested $4000 in a bond with the yearly interest rate of 4% his total interest on the investment was $800 what was
solniwko [45]
9.6 months that is how long the investment lasted.
8 0
4 years ago
In the figure, PQ is parallel to RS. The length of RP is 5 cm, the length of PT
Nikitich [7]

Answer:

A) 10

Step-by-step explanation:

Apex :)

7 0
3 years ago
Directions - For the following problem, write a paragraph proof to justify each step you make. All work must be neat,
nlexa [21]

$ PS = \frac{4}{3} x

Solution:

Given PRQ is a triangle.

ST is a line parallel to RQ.

$PT = x, \ PQ = 3x,  \ SR=\frac{8}{3}x

TQ=PQ-PT

TQ=3x -x=2x

<u>Triangle proportionality theorem,</u>

<em>If a line parallel to one side of a triangle intersects the other two sides, then it divides the two sides proportionally.</em>

$\frac{PS}{SR} =\frac{PT}{TQ}

$\frac{PS}{\frac{8}{3} x} =\frac{x}{2x}

Do cross multiplication, we get

$ PS \times 2x=x \times \frac{8}{3} x

Divide by 2x on both sides, we get

$ PS = \frac{4}{3} x

4 0
3 years ago
Solve for z. 20 − (z + 7) = 0.9
zhannawk [14.2K]

Answer:

x = 12.1

Step-by-step explanation:

20 − (z + 7) = 0.9

Distribute the minus sign

20 -x -7 = .9

Combine like terms

13 -x = .9

Subtract 13 from each side

-x = -12.1

x = 12.1

7 0
3 years ago
Read 2 more answers
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