Can someone really help me please

Mathematics

1 answer:

maksim [4K]2 years ago

4 0

Answer:

1-B, 2-B, 3-B, 4-B, 5-A

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!!WILL MARK BRAINLIEST!! plz help this is due today

meriva

Answer:

The answer is A

Step-by-step explanation:

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2 years ago

(2 thousands 7 tens )÷10 in unit form and standard form is what?

Nutka1998 [239]

1. Given equation = 2 thousands 7 tens / 10.
From this given equation, give the unit form and the standard form
Unit form is the expression where you replace the number with its place values.
=> 2 thousands and 7 tens divided by 1 tens.
=> 2 hundreds 7 ones – answer in unit form
Standard form is the expression which uses numbers and operators to express an equation.
=> 2 070 / 10
=> 207 – answer in standard form

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3 years ago

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(3 3/4)÷(−2 1/2)

Ierofanga [76]

Answer:

-1 1/2

Step-by-step explanation:

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3 years ago

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Lines 3x-2y+7=0 and 6x+ay-18=0 is perpendicular. What is the value of a?

BlackZzzverrR [31]

Answer:

$\boxed{\sf a = 9 }$

Step-by-step explanation:

Two lines are given to us which are perpendicular to each other and we need to find out the value of a . The given equations are ,

$\sf\longrightarrow 3x - 2y +7=0$

$\sf\longrightarrow 6x +ay -18 = 0$

Step 1 : Convert the equations in slope intercept form of the line .

$\sf\longrightarrow y = \dfrac{3x}{2} +\dfrac{ 7 }{2}$

and ,

$\sf\longrightarrow y = -\dfrac{6x }{a}+\dfrac{18}{a}$

Step 2: Find the slope of the lines :-

Now we know that the product of slope of two perpendicular lines is -1. Therefore , from Slope Intercept Form of the line we can say that the slope of first line is ,

$\sf\longrightarrow Slope_1 = \dfrac{3}{2}$