All categories

3 years ago

An electronics store had a special sale on two different models of calculators. The more high-tech model sold for $33.02 and

Mathematics

1 answer:

neonofarm [45]3 years ago

3 0

Answer:

$736.45/$33.02 = 22.30 high tech

x($33.02) = $736.45

$736.45/$18.55 = 39.70 older models

y($18.55) = $736.45

You might be interested in

HELP NOW ASAP HURRY i don't got all day!!!!!!!!!!!!!

Anarel [89]

Answer:

15 3/4t^2 + 5 1/4

Explanation:

h(t)=-16t^2+400

We can add 400 then - 64 and show as 8^2

= h(t)=-16t^2+400 - 8^2

But we also need to change 16t^2;

We divide 64 into 16 = 16/64 =0.25

and show 16t^2 changes by 0.25 = 1/4

15 3/4t^2 + 400-64

Can now look like

15 3/4t^2 + 5 1/4

As 5 1/4 = 64 x 5 1/4 = 336

8 0

4 years ago

HELP!! NEED TODAY!!<br><br> Find the value of x in each case.

Juliette [100K]

Answer:

x = 14

Step-by-step explanation:

∠ DCA and ∠ BCF are adjacent angles and sum to 180° , then

∠ DCA = 180° - 124° = 56°

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

6x is an exterior angle , then

6x = 2x + 56 ( subtract 2x from both sides )

4x = 56 ( divide both sides by 4 )

x = 14

7 0

3 years ago

Which of the following ordered pairs is a possible solution to the equation y = -2/3x - 4

Karolina [17]

The ordered pair that is the possible solution for the equation is (-6,0) (0,-4).

<h3>What is the Slope-intercept form of a linear equation?</h3>

The slope-intercept form of a linear equation takes the form y= mx + b.

Here:

Slope = m
b = y-intercept

The function f(x) = y = $\mathbf{-\dfrac{2}{3}x-4}$

$\mathbf{y = -\dfrac{2}{3}x-4}$

The slope (m) = -2/3

The x-intercept is the value of x for which y = 0

x-intercept = (-6,0)

The y-intercept is the value of y for which x = 0

y-intercept = (0,-4)

Learn more about the slope-intercept form of a linear equation here:

brainly.com/question/1884491

#SPJ1

6 0

2 years ago

According to records in a large hospital, the birth weights of newborns have a symmetric and bell-shaped relative frequency dist

Kamila [148]

Answer:

15.9% of babies are born with birth weight under 6.3 pounds.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 6.8 pounds

Standard Deviation, σ = 0.5

We are given that the distribution of birth weights is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(birth weight under 6.3 pounds)

P(x < 6.3)

$P( x < 6.3) = P( z < \displaystyle\frac{6.3 - 6.8}{0.5}) = P(z < -1)$

Calculation the value from standard normal z table, we have,

$P(x < -1) = 0.159 = 15.9\%$

15.9% of babies are born with birth weight under 6.3 pounds.

8 0

3 years ago

Please find x! Thank you, only if you know!

ikadub [295]

Answer:

$\boxed {\boxed {\sf x \approx 23.49 \ cm }}$

Step-by-step explanation:

This is a right triangle (the small square in the corner signifies a 90 degree angle), so Pythagorean Theorem can be used.

$a^{2} + b^{2} =c^{2}$

where a and b are the legs of the triangle and c is the hypotenuse. In this triangle, 17 and x are the legs because they form the right angle. 29 in the hypotenuse because it is opposite the right angle.

$a= 17 \\b=x \\c= 29$

$17^{2} + x^{2} =29^{2}$

Solve the exponents.

17²=17*17=289
29²= 29*29=841

$289+x^{2} =841$

289 is being added to x and the inverse is subtraction. Subtract 289 from both sides to isolate the variable.

$289-289+ x^{2} =841-289\\x^{2} =552$

x is being squared and the inverse is a square root. Take the square root of both sides of the equation.

$\sqrt {x^{2} }=\sqrt {552}$

$x=23.4946802489$

Let's round to the nearest hundredth. The 4 in the thousandth place tells us to leave the 9.

$x \approx 23.49$

x is approximately 23.49 centimeters.

4 0

3 years ago