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Firdavs [7]
3 years ago
11

Giải bài tập toán giúp tôi

Mathematics
2 answers:
11111nata11111 [884]3 years ago
6 0

Answer:

5x2 + 5x -1

Step-by-step explanation:

jus multiply 3x to 2x because there to the same power. it becomes a postive and you leave the rest.

snow_lady [41]3 years ago
3 0

Answer:

the first answer is right

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It can also be written as   (-∞, ∞)  This is called interval notation.

Note that  the minimum value of f(x)  is -4  so the range is [-4, ∞).   (All real values of y equal to or greater than -4)

3 0
3 years ago
At a local preschool there is a ratio of 3 boys to every 4 girls if there are 245 total preschoolers enrolled how many boys
JulsSmile [24]

Answer:

The total number of boys  = 105

Step-by-step explanation:

The ratio of boys to girls = 3: 4

⇒ For every 3 boys, there are 4 girls.

Now, total number of students = 245

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So, 3k + 4k = 245

or , 7k = 245

⇒ k =  245/7  = 35

⇒ k = 35

Hence, the number of boys = 3k = 3 x 35 = 105

and number of girls = 4k = 4 x 35 = 140

8 0
3 years ago
What should you do to solve the following equation? 5q = 7 A.Multiply both sides by 7 B. Divide both sides by 7 C. Multiply both
valentinak56 [21]

Answer:

D

Step-by-step explanation:

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8 0
3 years ago
1 point
postnew [5]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

(3 \times 25 )+ 60 = 75 + 60 =

135

Thus Lisa spent 135 $ .

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

3 0
3 years ago
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When constructing the centroid of a triangle, the intersection of all three of which type of line is needed?
8090 [49]
<span>The centroid of a triangle is the point of intersection of its medians. These are the lines joining each vertex with the midpoint of the opposite side. </span>
4 0
3 years ago
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