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Jlenok [28]
2 years ago
8

I need help please really fast

Mathematics
1 answer:
Elina [12.6K]2 years ago
3 0

Answer:

x =  \boxed{2}\:  and\: x =  \boxed{ \frac{5}{2} }

Step-by-step explanation:

2 {x}^{2}  - 9x + 10 = 0 \\  \\ 2 {x}^{2}  - 4x - 5x + 10 = 0 \\  \\ 2x(x - 2) - 5(x - 2) = 0 \\  \\ (x - 2)(2x - 5) = 0 \\  \\ x - 2 = 0 \:  \: 2x - 5 = 0 \\  \\ x =  \boxed{2} \: and \: x =  \boxed{ \frac{5}{2} } \\  \\

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Please help :)
slava [35]
For a system of equations such as this, add both of the equations together. The d values will cancel each other out, making 2e=-4. This means that e=-2. If you plug this into one of the equations, you will have d + (-2) = 1. Isolate the variable by adding -2 to both sides: d=3. Written in the format described above (d,e), your answer is (3, -2).
6 0
3 years ago
EXPONENTS:<br> What is the value of 7 cubed?<br> A. 14<br> B. 21<br> C. 49<br> D. 343
quester [9]

Answer:

C

Step-by-step explanation:

7*7=49

6 0
3 years ago
Read 2 more answers
Jake tutors students. He charges $10 for the first session and $5 for each additional session. Let x
SIZIF [17.4K]

Answer: y = 5x + 10

Step-by-step explanation:

y= 5x + 10

THINK ABOUT IT! if 5 is for EACH additional session and x is equal to the NUMBER OF SESSIONS...... then 5 times x will give you the cost for each additional session, but NOT INCLUDING THE 10 FOR THE FIRST SESSION. so simply just do 5x + 10 and y is the total cost so

y = 5x + 10

8 0
2 years ago
Read 2 more answers
Which expression can be used to approximate the expression below, for all positive numbers a, b, and x, where a Not-equals 1 and
defon

The expression that can be used to approximate the expression below islog_a x = \frac{log_{b}a}{log_{b}x}

  • Given the logarithmic function expressed as log_a x, we need the log expression that is equivalent to the given expression.

  • To do this, we will write the logarithm as a quotient to the same base. Using the base of 10, the expression can be written as;

log_a x = \frac{log_{10}a}{log_{10}x}

This is similar to the option c where the base of "b" was used as log_a x = \frac{log_{b}a}{log_{b}x}

Learn more on law of logarithms here: brainly.com/question/11587706

3 0
2 years ago
Jules ran 2/3 miles. Miles ran 5/8 more than Jules. How many miles did Miles run?
kifflom [539]
2/3 is equivalent to 16/24
and 5/8 is equivalent to 15/24 miles
15/24+16/24= 31/24

31/24 simplifies to 1 6/24
Which simplifies down to 1 1/6

Miles ran 1 and 1/6 miles
3 0
3 years ago
Read 2 more answers
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