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frutty [35]
3 years ago
9

I REALLY NEED HELP

Mathematics
1 answer:
Ede4ka [16]3 years ago
8 0
There are 60 minutes in one hour, thus, 45 miles per hour is 45 miles per 60 minutes, thus

\bf \begin{array}{ccll}
miles&minutes\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
45&60\\
240&m
\end{array}\implies \cfrac{45}{240}=\cfrac{60}{m}\implies m=\cfrac{240\cdot 60}{45}
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Paula is training take part in a fun run fir charity. Paula weighed 65.5 kilogram before she started her training. She has list
lesantik [10]
We can convert grams to kilograms by dividing by 1000.
3500÷1000=3.5kg

Now we subtract this from her original weight
65.5-3.5= 62kg
8 0
3 years ago
2x-4y=8 and 7x-3y=61 solve by substitution
Ratling [72]

Answer:

(10, 3)

Step-by-step explanation:

Solve by Substitution

2x − 4y = 8 and 7x − 3y = 61

Solve for x in the first equation.

x = 4 + 2y 7x − 3y = 61

Replace all occurrences of x with 4 + 2y in each e quation.

Replace all occurrences of x in 7x − 3y = 61 with 4 + 2y. 7 (4 + 2y) − 3y = 61

x = 4 + 2y

Simplify 7 (4 + 2y) − 3y.

28 + 11y = 61

x = 4 + 2y

Solve for y in the first equation.

Move all terms not containing y to the right side of the equation.

11y = 33

x = 4 + 2y

 Divide each term by 11 and simplify.

y = 3

x = 4 + 2y

 

Replace all occurrences of y with 3 in each equation.

Replace all occurrences of y in x = 4 + 2y with 3. x = 4 + 2 (3)

y = 3

Simplify 4 + 2 (3).

x = 10

y = 3

The solution to the system is the complete set of ordered pairs that are valid solutions.

(10, 3)

The result can be shown in multiple forms.

Point Form:

(10, 3)

Equation Form:

x = 10, y = 3

4 0
3 years ago
Read 2 more answers
I NEED HELP MAN PLEASE!!!! nobody is helping rn ):
igor_vitrenko [27]
B is the first term
c is the common ratio

if the first term is x and the 2nd is y then x times c=y

so
-5 times what=10?
what=-2
c=-2
the first term is -5

-5(-2)^(n-1)

b=-5
c=-2
8 0
4 years ago
I need help pleaseeee
bekas [8.4K]

Answer:

20cm

Step-by-step explanation:

pythagorean theorem

15^2 + b^2 = 25^2

225 + b^2 = 625

b^2 = 400

b = 20

6 0
4 years ago
Read 2 more answers
When y=75,x=1 over 2 what is the value of y when x is 2 and 1/4
Montano1993 [528]

Answer:

idk

Step-by-step explanation:

5 0
3 years ago
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