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stellarik [79]
2 years ago
9

1.5 ( x + 3 ) + 3.8 ( 7 x − 2 ) ?

Mathematics
1 answer:
goblinko [34]2 years ago
7 0

Answer: 28.1x−3.1

Step-by-step explanation: 1.5(x+3)+3.8(7x−2)

=(1.5)(x)+(1.5)(3)+(3.8)(7x)+(3.8)(−2)

=1.5x+4.5+26.6x+−7.6

=(1.5x+26.6x)+(4.5+−7.6)

=28.1x+−3.1

=28.1x−3.1

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A is the point with coordinates (3,8) b is the point with coordinates (x,13) the gradient of an is 2.5 .work out the value of x
Solnce55 [7]

Answer:

x = 5

Step-by-step explanation:

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6 0
3 years ago
Start of Questions The admission fee at an amusement park is $5.00 for children and $6.00 for adults. On a certain day, 314 peop
Greeley [361]

Answer:

144 children and 170 adults

Step-by-step explanation:

make 2 equations

make :

the children as the regarded as the variable : x

the adults are the regarded as the variable  : y

<em>5x + 6 y = 1740</em>

<em>x + y = 314</em>

<h3><u>solve this by the method of elimination </u></h3>

5x + 6y = 1740

5(x + y = 314)

= 5x + 5y = 1570

5x + 6y = 1740

5x + 5y = 1570

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now replace the value of y in the eqaution

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hence they were 144 children and 170 adults

mark as brainiest

3 0
3 years ago
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