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3 years ago

What is 7/10 minus 1/2?

Mathematics

2 answers:

UNO [17]3 years ago

6 0

I think that the answer is 3/10

PilotLPTM [1.2K]3 years ago

4 0

Make them into decimals and it will be easier.

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deff fn [24]

1 cup is 128 grams, she used 1/2 of a cup, 1/2 is 64 grams, she needs to add 1/4 of cup (32 grams) to have the correct amount

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4 years ago

What is the slope of a line perpendicular to the line whose equation is 6x+3y=-63

nadya68 [22]

Answer:

y=x/2−63

Step-by-step explanation: 6x+3y=-63 3y=6x-63= y=2/x-63

4 0

3 years ago

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Bruno is sewing a large rectangular tablecloth for a restaurant. He has 30 square feet of fabric, and the length of the table cl

Crank

The tablecloth would have to be 4 feet wide to use all of the fabric. 30=7.5x is the equation to solve this problem. You need to use reverse operations, so 30/7.5=4.

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3 years ago

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Find the value of x that satisfies the equation 24=17-14x

Anna35 [415]

Answer:

x= -0.5

Step-by-step explanation:

6 0

3 years ago

Let $P$ and $Q$ be constants. The graphs of the lines $x + 5y = 7$ and $15x + Py = Q$ are perpendicular and intersect at the poi

Marta_Voda [28]

Answer:

(-3, -129)

Step-by-step explanation:

Given

Two lines:

$x + 5y = 7$

$15x + Py = Q$

are perpendicular to each other and intersect at point (-8,3).

To find: (P, Q)

Solution:

The two lines intersect at (-8,3).

It means, the equation of line will be satisfied when we put value of x = -8 and y = 3

Putting in the second equation, we will get an equation in P and Q:

$15\times (-8) + P \times 3 = Q\\\Rightarrow 3P = Q +120 ..... (1)$

Given that two lines are perpendicular.

It means the product of their slopes will be equal to -1.

i.e. $m_1\times m_2=-1$

Slope of a line of the form $ax+by+c=0$ is given as:

$m=-\dfrac{a}{b}$

So, slopes of given lines are:

$m_1=-\dfrac{1}{5}\\m_2=-\dfrac{15}{P}$

Using the condition:

$-\dfrac{1}{5}\times \dfrac{-15}{P}=-1\\\Rightarrow P = -3$

Putting the value of P in equation (1):

$\Rightarrow 3\times (-3) = Q +120 \\\Rightarrow Q = -9-120 = -129$

So, answer is (-3, -129)

7 0

4 years ago