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kiruha [24]
2 years ago
12

Plesae urgent hurryy for brainlist !!!!!!!!!!!

Mathematics
1 answer:
kirill [66]2 years ago
5 0
C, or 5000(0.9)t is correct.

Multiplying by 0.1 would not make the car’s price go down by ten percent, but 90. Hence, C is correct.


Hope this helps!
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4. Martha loves hot dogs, she eats 120 a day. Her friend dared her to eat sixty more one
PilotLPTM [1.2K]

Answer:

120*3.5=420+180=600

Which means it took her about 4 and half days.

Step-by-step explanation:

3 0
2 years ago
Which equation can be used to solve the problem? 
hoa [83]
The answer is  B
because
16 x 7 =112

5 0
3 years ago
Read 2 more answers
Evaluate using properties of arithmetic operations. 12∙121∙13÷(26∙11)∙7÷11
Anika [276]

Answer:

0.1978

Step-by-step explanation:

According to the rule of BODMAS (or FEDMAS), let us do the bracket first.

26·11 = 286

Now, do the multiplication from the left.

12·121·3 = 4356

286·7 = 2002

Now, do the division from the left.

\frac{\frac{4356}{2002} }{11}

=\frac{4356}{2002(11)}

=\frac{396}{2002}

= 0.1978



8 0
2 years ago
Prove that the diagonals of a rhombus are perpendicular using coordinate geometry
lozanna [386]

If we draw a rhombus OABC on a coordinate grid with one vertex at the point O (0,0)

and let its height be 1 then (using the Pythagoras theorem) the coordinates of the 4 points will be as follows:-

O = (0,0) , A = (1, 1), B = (sqrt2+ 1 , 1) , C = (sqrt2, 0)

Slope of the diagonal OB = 1 / (sqrt2 + 1)

Slope of the other diagonal AC = - 1 / (sqrt2 - 1)

Product of the slopes = - 1 / ( sqrt2 + 1)(sqrt2 - 1) = -1 / 1 = -1

This proves that the diagonals are perpendicular.

5 0
2 years ago
(08.05)
Readme [11.4K]
The mistake is in step 3:

I: −2m =−12 − 2n
II: 2m = 8 + 8n

the student set both right sides of the equations equal (−12 − 2n = 8 + 8n), but the left sides aren't equal: first equation has -2m, second has +2m so the signs of one of the equations must be inverted first
5 0
3 years ago
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