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3 years ago

Math question help me please

Mathematics

1 answer:

nignag [31]3 years ago

3 0

Answer:

he 8 times

Step-by-step explanation:

so he mows 5 time his sister which is 9 but it says 3 for the sister instead of 4 making it 8

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What is 20% tip on a bill of 59.61

Ugo [173]

Answer:

about $12

Step-by-step explanation:

59.61(0.20)=11.922

11.922 rounded up is 12.

ur total bill would be $71.61

5 0

3 years ago

The slope is -10 and it passes through (2,5)

SVETLANKA909090 [29]

Answer:

y=-10x+25

Step-by-step explanation:

7 0

3 years ago

Given the sequence 1/2 ; 4 ; 1/4 ; 7 ; 1/8 ; 10;.. calculate the sum of 50 terms

miv72 [106K]

Hint :-

Break the given sequence into two parts .
Notice the terms at gap of one term beginning from the first term .They are like $\dfrac{1}{2},\dfrac{1}{4},\dfrac{1}{8}$ . Next term is obtained by multiplying half to the previous term .
Notice the terms beginning from 2nd term , $4,7,10,13$ . Next term is obtained by adding 3 to the previous term .

Solution :- 

We need to find out the sum of 50 terms of the given sequence . After splitting the given sequence ,

$\implies S_1 = \dfrac{1}{2},\dfrac{1}{4},\dfrac{1}{8}$ .

We can see that this is in Geometric Progression where 1/2 is the common ratio . Calculating the sum of 25 terms , we have ,

$\implies S_1 = a\dfrac{1-r^n}{1-r} \\\\\implies S_1 = \dfrac{1}{2}\left[ \dfrac{1-\bigg(\dfrac{1}{2}\bigg)^{25}}{1-\dfrac{1}{2}}\right]$

Notice the term $\dfrac{1}{2^{25}}$ will be too small , so we can neglect it and take its approximation as 0 .

$\implies S_1\approx \cancel{ \dfrac{1}{2} } \left[ \dfrac{1-0}{\cancel{\dfrac{1}{2} }}\right]$

$\\\implies \boxed{ S_1 \approx 1 }$

$\rule{200}2$

Now the second sequence is in Arithmetic Progression , with common difference = 3 .

$\implies S_2=\dfrac{n}{2}[2a + (n-1)d]$

Substitute ,

$\implies S_2=\dfrac{25}{2}[2(4) + (25-1)3] =\boxed{ 908}$

Hence sum = 908 + 1 = 909

7 0

3 years ago

I need help ASAP snsnnsbsbsbs

anastassius [24]

Answer:

The value of a is 50°.

Step-by-step explanation:

In an isosceles triangle, 2 sides have the same lengths and same angles so we can assume that the other side of the triangle is 65°.

Given that the total angle of a triangle is 180°, so have to subtract it :

$a = 180 - 65 - 65$

$a = 180 - 130$

$a = 50$

3 0

3 years ago

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Is the function shown in the graph one-to-one?

Cloud [144]

Answer:

yes

Step-by-step explanation:

The graph is of a function (one output for every input) that also passes the horizontal line test (one input for every output). Hence it is one-to-one.

For a function, the key for it being one-to-one is that it pass the horizontal line test.

3 0

3 years ago

Read 2 more answers