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4 years ago

Can someone like help

Mathematics

1 answer:

Wewaii [24]4 years ago

3 0

You haven't shared all of the possible answers. The graph you've shared has a y-intercept of 4, which differs from the y-intercept of <span>y=−1/2x+8.

Go on to the other 3 possible answers. Which answer shows a y-intercept of 8 and a slope of -1/2?</span>

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How to find if an equation is parallel perpendicular or neither?

iren [92.7K]

Look at the gradient of both the equations (the x multiplier, usually known as m), and there are a couple of rules:

Parallel: The gradients are identical
Perpendicular: Look at the gradients as fractions. To get the perpendicular to a gradient you flip the fraction and change the sign. If this is the case for the two gradients, then they are perpendicular.

6 0

3 years ago

If a=3i+9j and b=4i-6j, find 5a-3b Write your answer in the form i + j.

Hatshy [7]

Answer:

3i + 63j

Step-by-step explanation:

Step 1: Replace the variables with the given statements

5(3i+9j) - 3(4i-6j)

Step 2: Distribute

15i + 45j -12i + 18j

Step 3: Combine like terms

3i + 63j

7 0

3 years ago

Melissa put her cat, Herman, on a diet and kept track of his weight. At the end of 4 weeks, she recorded Herman's weight change

Sergio [31]

The cats weight change each week is $-1\frac{1}{8}$ ounces

<h3><u>Solution:</u></h3>

Given that, Melissa put her cat, Herman, on a diet and kept track of his weight.

At the end of 4 weeks, she recorded Herman's weight change as $-4\frac{1}{2}$ ounces.

She noticed that he had lost the same amount of weight each week.

We have to find what is Herman's weight change each week of the diet?

Now, let the weight lost per week be n ounces.

Then, in total he lost 4n ounces in 4 weeks

And we are given that, lost wait is $-4\frac{1}{2}$ ounces

$\begin{array}{l}{4 n=-(4 \frac{1}{2}) \text { ounces }} \\\\ {4 n=-(\frac{4 \times 2+1}{2})} \\\\ {4 n=-(\frac{9}{2})} \\\\ {n=-(\frac{9}{8})=-(\frac{8+1}{8})=-1 \frac{1}{8} \text { ounces }}\end{array}$

Here negative sign indicates cat is losing weight

Hence, the cats weight change each week is $-1\frac{1}{8}$ ounces

7 0

4 years ago

Evaluate the expression: 4(8 − 6)5 2 − 6 ÷ (−3).

mr Goodwill [35]

Answer:

86 or 32, depending on the correctness of the syntax

Step-by-step explanation:

We use PEMDAS:

Parentheses: 4(2)5 2-6/(-3)

Exponents: <em>I'm assuming that all the syntax is correct (so no exponents).</em>

Multiplication and Division: 40*2+6 = 80 + 6

Addition and Subtraction: 86

If you copy+pasted this expression, then the original equation would have been: (4(8 − 6)^5)/(2 − 6 ÷ (−3)). We can use PEMDAS:

Parentheses: (4(2)^5)/(2 - 6 ÷ (−3))

We solve the parentheses individually using PEMDAS:
Exponents: (4*32) <-- Numerator | Denominator -->(2 - 6 ÷ (−3))
Multiplication and Division: 128 <-- Numerator | Denominator --> 2 + 2
Addition and Subtraction: 128 < -- Numerator | Denominator --> 4

We now have the following fraction: 128/4

That simplifies to 32

7 0

3 years ago

1. Choose an apropiate metric unit for the mass of a typical house cat

Elenna [48]

1. Kilogram
2. Peach
3. 0.0032715 grams
4. 538,836 mL
5. 1.65m
6. 840

4 0

3 years ago