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3 years ago

How to work this out and the answer?

Mathematics

1 answer:

Greeley [361]3 years ago

6 0

Sqrt 1625

we have to find the 2 perfect square numbers that this number lies between.
40^2 = 1600
41^2 = 1681

so ur number lies in between 40 and 41

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In a two-digit number the tens digit is four less than the units digit. Seven times the tens digit plus five times the units dig

ANTONII [103]

Good morning ☕️

Answer:

Step-by-step explanation:

Let our number be “ xy ”

the tens digit is four less than the units digit means y-4=x

Seven times the tens digit plus five times the units digit is equal to 56 means

7x+5y=56

now we have to solve the system:

y-4=x (1)

7x+5y=56 (2)

(1) ⇒ y=4+x

Then we substitute y by 4+x into the second equation like this:

7x+5(x+4)=56

⇔ 7x+5(x+4)=56

⇔ 12x+20=56

⇔ x = 3

now using equation (1) we get : y=3+4 = 7

4 0

3 years ago

It costs $4.25 per game at the bowling alley, plus $1.90 to rent shoes. If Wayne has $20, how many games can he bowl?

Natasha2012 [34]

Answer:

Step-by-step explanation:

4 games

8 0

3 years ago

Read 2 more answers

Nic paid a total of +25.68 for a game, including 7, tax. What was the

Inga [223]

Answer:

x=24

Step-by-step explanation:

x + 0.07x = 25.68

1.07 x = 25.68

x = 24

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2 years ago

Find the equation of the line passing through the points (3,7) and (-2,5)

r-ruslan [8.4K]

Answer:

The equation of the line passing through the points (3,7) and (-2,5) is y=⅖x+29/5

Step-by-step explanation:

Greetings !

$first \: find \: the \: slope \: m \\ m = \frac{(Y₂-Y₁)}{(X₂-X₁)} ..substitute \: vlues \\ m = \frac{(5 - 7)}{( - 2 - 3)} = \frac{ - 2}{ - 5} = \frac{2}{5} \\ y = mx + b \: to \: find \: equation \: of \: aline \\ between \: two \: poins and \: use \: \\ one \: of \: the \: two \: points \: lets \: take( - 2.5) \\ y = mx + b \\ 5 = \frac{ - 2}{5} ( - 2) + b \\ 5 = \frac{ - 4}{5} + b \\ 5 + { - 4}^{5} = b \\ \frac{25 + 4}{5} = b \\ b = \frac{29}{5} \\ finally \: equation \: of \: the \: line \: will \: be \\ y = \frac{2}{5} x + \frac{29}{5}$

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2 years ago

Is 4 r square the answer...pls I need to know thank you :)

zloy xaker [14]

Step-by-step explanation:

$\pi {r}^{2} \\$

3 0

3 years ago