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zysi [14]
3 years ago
14

Find the solution and explain your reasoning

Mathematics
1 answer:
Jobisdone [24]3 years ago
7 0

Answer:

x = 2.5

Step-by-step explanation:

4(x + 7) = 38

Simplify.

4x + 28 = 38

Subtract 28 from each side of the equation.

4x + 28 - 28 = 38 - 28

Simplify.

4x = 10

Divide each side by 4.

4x ÷ 4 = 10 ÷ 4

x = \frac{10}{4} \\

x = \frac{5}{2}

x = 2\frac{1}{2}

x = 2.5

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lisov135 [29]

The answer is B, C, and D. Like terms are terms with all the same variable, so 5x and -x are like terms.

C is correct. If we add -x to 5x, we get 4x. The other numbers remain unchanged because they have no like terms.

D is correct. Applying the rule of like terms, which is that like terms are numbers with the same variable, only add together numbers with the same variable.

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Which of the quadratic functions has the narrowest graph?
topjm [15]

A quadratic function's graph being wide or narrow is determined or depended on a-term:

\large{y = a {x}^{2}  + bx + c}

If |a| has a lot of value, for example a = 2 or a = 100. The graph will get narrower if increasing the value of |a|. On the other hand, If |a| has small value, for example a = 1/2 or a = 1/10000. The graph would be wide.

Also it does not matter if a-term is negative or not since a-term being positive or negative determines if a parabola is upward or downward. Only |a| determines how narrow/wide the graph is.

From the question, it is clear that the parabola y = 2x^2 is the narrowest graph since it has the highest |a| value out of all choices.

Answer

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6 0
3 years ago
Giving out the 15 points help please number 2.
lakkis [162]

Answer:

B that's the answer for that

5 0
3 years ago
2x + 5y = 10 <br><br> i need the slope and y-intercept
ankoles [38]
Y intercept is found by having the x value equal 0 (and vise versus for x intercept) so 5y=10 or simplified y=2
Then you have to find the x intercept (2x=10 and or x=5) then it’s just run over rise (2/5)
3 0
3 years ago
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3 years ago
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