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ICE Princess25 [194]
2 years ago
15

Six Less than four times a number is -70

Mathematics
1 answer:
valkas [14]2 years ago
7 0

The answer is 286

Step-by-step explanation:

70 x 4 = 280 plus 6 equals 286

You might be interested in
1. Which of the following is the square of a binomial? O a2 + b2 O 16x2 +9y2 O m2-mn + n2 O c2-2cd+d2​
melomori [17]

Answer:

i guess it's the second one, 16x2+9y2, since they are both raised to 2 and they are binomial

6 0
3 years ago
Find the LinReg line of best fit for this data set.
finlep [7]

The LinReg line of best fit for this data set is ŷ = -1.24X + 0.66

<h3>What is regression line?</h3>

A linear regression line has an equation of the form Y = a + bX, where X is the explanatory variable and Y is the dependent variable.

Given:

(−5, 6.3),

(−4, 5.6),

(−3, 4.8),

(−2, 3.1),

(−1, 2.5),

(0, 1.0),

(1, −1.4)

Sum of X = -14

Sum of Y = 21.9

Mean X = -2

Mean Y = 3.1286

Sum of squares (SSX) = 28

Sum of products (SP) = -34.6

Regression Equation,

ŷ = bX + a

b = SP/SSX = -34.6/28 = -1.23571

a = MY - bMX = 3.13 - (-1.24*-2) = 0.65714

ŷ = -1.23571X + 0.65714

ŷ = -1.24X + 0.66

Learn more about regression line here:

brainly.com/question/7656407

#SPJ1

3 0
2 years ago
I'll name you the BRAINIEST if you can answer this.The scale factor for a model is 18 cm
bezimeni [28]

Answer:

  32.625 m

Step-by-step explanation:

You have the proportion ...

  18 cm : ___ m = 22.4 cm : 40.6 m

This can be rearranged to ...

  ___ m/(18 cm) = (40.6 m)/(22.4 cm)

Multiplying by 18 cm gives ...

  ___ m = (40.6 m)·(18/22.4)

  ___ m = 32.625 m

6 0
3 years ago
A triangle has a base of 2 m and a height of 3 m. Find the area of the triangle. Use the formula: A= 0.5 x Base x Height.
Lerok [7]

Answer:

3

Step-by-step explanation:

2x3=6/2=3

8 0
3 years ago
A test score of 48.4 on a test having a mean of 66 and a standard deviation of 11. Find the ​z-score corresponding to the given
Mariulka [41]

Answer:

A. -1.6; not significant

Step-by-step explanation:

The z-score of a data set that is normally distributed with a mean of \bar x and a standard deviation of \sigma, is given by:

z=\frac{x-\bar x}{\sigma}.

From the question, the test score is: x=48.4, the mean is \bar x=66, and the standard deviation is \sigma =11.

We just have to plug these values into the above formula to obtain:

z=\frac{48.4-66}{11}.

This simplifies to:  z=\frac{-17.6}{11}.

z=-1.6.

We can see that the z-score falls within two standard deviations of the mean.

Since -2\le-1.6\le2 the value is not significant.

The correct answer is A. -1.6; not significant

3 0
3 years ago
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