i need help on this hegarty question i have been stuck on for hours

Answer:

Use the formula Where 1. q = Heat Energy 2. m = Mass 3. c = Specific Heat 4. ΔT = Change in temperature. 14640 J = (300 g)(2.44 J/g·°C)ΔT Solve for ΔT: 1. ΔT = 14640 J/(300 g)(2.44 J/g·°C) 2. ΔT = 20 °C 3. ΔT = Tfinal - Tinitial 4. Tfinal = Tinital+ ΔT 5. Tfinal= 10 °C + 20 °C 6. Tfinal= 30 °C Answer:The final temperature of the ethanol is 30 °C.

Answer:

AA similarity postulate

Explanation:

For triangle XZY, the angles are 90°, 40°, 50°.

For triangle AXB, the angles are 90°, 40°, 50°.

Which states that all the angles are of equal measure in the triangles.

This is stated by AA similarity theorem meaning when two angles are equal in the triangle. Then the triangles are congruent to each other.

Answer:

t = 6

∠BAC = ∠EAD = 6°

∠BCA = ∠ABC = ∠AED = ∠EDA = 87°

Step-by-step explanation:

From inspection of the diagram, we can see that there are 2 triangles inside a circle.  One of the vertices of both triangles is at the center of the circle. The other vertices of both triangles are on the circumference of the circle.

The dashes on the line segments (chord) mean they are equal in length.

⇒ BC = DE

The legs of both triangles are the radius of the circle.

Therefore, ΔABC = ΔAED

This means the ∠BAC = ∠EAD, therefore:

⇒ 6t - 12 = 18 - 4t

⇒ 10t - 12 = 18

⇒ 10t = 30

⇒ t = 3

Substituting the found value of t into one of the expressions to find ∠BAC and ∠EAD:

⇒ ∠BAC = ∠EAD = 6(3) - 12 = 6°

Triangles ΔABC and ΔAED are both isosceles triangles (as they have 2 sides of equal length: the radii).

Therefore, the remaining 2 angles in each triangle will be equal.

The sum of interior angles of a triangle = 180°

⇒∠BAC + 2(∠BCA) = 180°

⇒ 6° + 2(∠BCA) = 180°

⇒ 2(∠BCA) = 174°

⇒ ∠BCA = 87°

Therefore, as ∠BCA = ∠ABC = ∠AED = ∠EDA

all the other angles are 87°

If j represent the number of jelly beans in each box, then the equation that models the problem is; 6j = 324

We are told that the principal used 6 small boxes of jelly beans to fill a large glass jar.

Now, each box had the same number of jelly beans, for a total of 324 jelly beans.

If j represent the number of jelly beans in each box, then the equation that models the problem is; 6j = 324

Read more about Equations at; https://brainly.com/question/1214333

#SPJ1

Answer:

$69

Step-by-step explanation:

He ows Josue $69 because $158-$89 = $69

The probability of choosing a purple marble from the given parameters is given as; 29%

We are given;

Probability of drawing an orange marble = 23% = 0.23

Probability of of drawing a white marble = 48% = 0.48

Thus, probability of drawing a purple marble is;

P(purple marble) = 100% - (23% + 48%)

P(purple marble) = 29%

Read more about Probability at; https://brainly.com/question/24756209

#SPJ1

Option A is the correct option. The polynomial correctly combines the like terms and expresses the given polynomial in standard form is,

f(m,n) = n⁶+7mn⁵+14m²n⁴-5m³n³-6m⁶-2m⁶

A polynomial equation is an equation in which the unknown variable is one and the highest power of the unknown variable is n. Here n can be any real number.

Given information-

The polynomial equation given in the problem is,

8mn⁵-2m⁶+5m²n⁴-m³n³+n⁶-4m⁶+9m²n⁴-mn⁵-4m³n³

Let the above polynomial is. Thus,

f(m,n) = 8mn⁵-2m⁶+5m²n⁴-m³n³+n⁶-4m⁶+9m²n⁴-mn⁵-4m³n³

The terms with the same base and exponents can be added or subtracted from each other. Thus solve the equation further as,

f(m,n) = ( 8mn⁵ - mn⁵ ) -2m⁶ + ( 5m²n⁴+9m²n⁴ ) - ( m³n³-4m³n³) + n⁶-4m⁶

f(m,n) = 7mn⁵ - 2m⁶ + 14 m²n⁴ - 5 m³n³ + n⁶- 6m⁶

Arrange it as,

f(m,n) = n⁶+7mn⁵+14m²n⁴-5m³n³-6m⁶-2m⁶

Thus the polynomial correctly combines the like terms and expresses the given polynomial in standard form is,

f(m,n) = n⁶+7mn⁵+14m²n⁴-5m³n³-6m⁶-2m⁶

Learn more about the polynomial equation here;

brainly.com/question/2833285

#SPJ1

Answer:

Step-by-step explanation:

Because the slope of y = 2x + 3 is 2, y increases by 2 for every unit increase in x.

Substituting the given x-value -2 into y = 2x + 3 results in y = -1.

If we now increase x by 1, from -2 to -1, y increases by 2:  the new

y value is y = -1 + 2 or y = 1. which agrees with the +1 in the list of y-values.

Again, y =  ?,,,1,,,,?,,?,,7,,?  becomes  y = -1, 1, ?,,?,,7.  Note that -1 + 2 = 1;

1 + 2 = 3; 3 + 2 = 5; 5 + 2 = 7 (which agrees with the given 7); 7 + 2 = 9.

So the given incomplete table of values

x,,-2,,-1,,0,,1,,2,,3

y,,,?,,,1,,,,?,,?,,7,,?

becomes:

x,,-2,,-1,,0,,1,,2,,3

y,,, -1,,1,,,3,,5,,7,,9

Answer:

Step-by-step explanation:

Multiplicative inverse of 26/5 is 5/26

(4/13 + 5/26)

13/26 ᴏʀ 1/2

Answer:

x = 5, x = 1

Step-by-step explanation:

Hello!

We can solve this quadratic by factoring.

Use the zero product property:

x = 5, or x = 1

It is Given that f(x) = log₁₀(x) then the value of f(50) is 1.70.

Logarithmic functions are defined as the inverses of exponential functions.

Hence, exponential functions can be expressed in logarithmic form

Given that f(x) = log₁₀(x)

we need to find the value of f(50),

we have to substitute x to be 50 in the logarithm function,

f(50) = log₁₀(50)

f(50) = log₁₀(5 x 10)

f(50) = log₁₀(5) + log₁₀(10)  

f(50) = 1 + log₁₀(5)

f(50) = 1 + 0.70

f(50) = 1.70

Hence, It is Given that f(x) = log₁₀(x) then the value of f(50) is 1.70.

Learn more about logarithmic ;

https://brainly.com/question/24160402

#SPJ1

Answer:

3n-10

Step-by-step explanation:

Goes up by three and the first number of this sequence is 10 below 3.

=202 in²

Divide the shape into 2.

Area of a rectangle= Length * Width

So..

The first shape = 13in*4in = 52in²

The second shape = 15in * 10in = 150in²

150 + 52 = 202in²

The cost of the family rug with dimensions 10-ft-by-11-ft given a proportional relationship is $159.50

Cost = $348.00

Area of rug = length × width

= 15 ft × 16 ft

= 240 square feet

Cost of a new rug = x

Area = length × width

= 10 ft × 11 ft

= 110 square feet

348 : 240 = x : 110

348/240 = x/110

cross product

348 × 110 = 240 × x

38,280 = 240x

x = 38,280 / 240

x = $159.50

Learn more about ratio:

https://brainly.com/question/2328454

#SPJ1

Answer: -10

Step-by-step explanation:

10 x 4 is 40 so with 2 negatives, it turns positive, and 40 plus 10 = 50

Answer:

x=-10

Step-by-step explanation:

-4x+10=50

10=50+4x

-50+10=4x

-40=4x

4x=-40

x=-40÷4

x=-10

Answer:

0.24

Step-by-step explanation:

$1.20 ÷ 5 = 0.24

To check that we are going to multiply [tex]5 x 0.24 = $1.20\\[/tex]

I hope this helps and have a great day!

The ratio of the days it rained to number of days is 3 : 7

The proportion of the number of days it rained is given as:

Proportion = 3/7

This means that:

Proportion = Days it rained/Total number of days.

So, we have:

Days it rained/Total number of days = 3/7

Express as ratio

Days it rained : Total number of days = 3 : 7

Hence, the ratio is 3 : 7

Read more about ratios at:

https://brainly.com/question/2328454

#SPJ1

if i was i your class or in bigger class i will help you

Answer:

38760 ways

Step-by-step explanation:

20 C 6 = 38760

Answer:

(a,b)

Step-by-step explanation:

Using the Midpoint formula,

[tex]\left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)[/tex]

you will get

[tex]\left(\frac{2a+0}{2},\:\frac{0+2b}{2}\right)[/tex]

which is

(a,b)

Answer:

[tex]x = -\dfrac{48}5[/tex]

Step by step explanation:

[tex]~~~~~~~\dfrac{x^2+12x+36}{2x^2}-\dfrac{x^2 +7x +12}{2x^2}= \dfrac 5{4x}\\\\\\\implies \dfrac{x^2 +12x +36 -x^2 -7x -12}{2x^2 } = \dfrac 5{4x}\\\\\\\implies \dfrac{5x+24}{2x^2} = \dfrac 5{4x}\\\\\\\implies 4x(5x+24) = 5(2x^2)\\\\\\\implies 20x^2+96x= 10x^2\\\\\\\implies 20x^2 -10x^2 +96x=0\\\\\\\implies 10x^2 +96x= 0\\\\\\\implies 5x^2 +48x = 0\\\\\\\implies x(5x+48)=0\\\\\\\implies x = -\dfrac{48}5~~~~~;[x\neq 0][/tex]

In this case, we must use our trigonometric equations to help us solve this problem:

    ⇒ look at the diagram attached

Let's examine what the problem wants:

Let's examine what the problem gives us:

Let's solve:

  [tex]tan(41)=\frac{12}{x} \\12=x*tan(41)\\x=\frac{12}{tan(41)} \\x=13.80[/tex]

Answer: 13.8 (rounded to nearest tenth)

Hope that helps!

The recursive formula is f(n+1)= f(n)-5.

Given sequence :

f(1)= 6, n≥1.

Let f(n) denote the nth term of the given sequence.

f(1)= 6

f(2)= 1 = f(1)-5

f(3)= -4 = 1-5= f(2) -5

f(4)= -9 = 1-10 = f(2)-10

and so on

Hence, the recursive formula is f(n+1)= f(n)-5.

Learn more about this concept here:

https://brainly.com/question/13210754

#SPJ1

What is the sentence and what are the questions. Until I know I can't help. But I should be able to answer if you can tell me

Answer:

-1

Step-by-step explanation:

ecuacion de la pendiente está dada por:

Y-yo=m(X-xo)

donde m es la pendiente

del problema :

y-6 = - (x - 3

m=-1

answer to this is 24cm2

Step-by-step explanation:

area of square is 4x4=16 and area of triangle is 6x4=32 add the both together (32+16) and you have 40cm2

Answer:

363.22

Step-by-step explanation:

Method 1:

You could find the whole figure surface area than divided by 1/2

Method 2: (the one I'm going to personally be doing)

Break the figure into two rectangular figures

Formula for surface area of rectangular prism:

A = 2(width x length + height x length + height x width)

Figure 1:

A = 2(width x length + height x length + height x width)

height = 3.8 yd

length = 10.1 yd

width = 4.3 yd

A = 2((4.3) x (10.1) + (3.8) x (10.1) + (3.8) x (4.3))

A = 2(98.15)

A = 196.3

Figure 2:

A = 2(width x length + height x length + height x width)

height = 8.4 yd

length = 10.1 yd

width = 2 yd

A = 2((2) x (10.1) + (8.4) x (10.1) + (8.4) x (2))

A = 2(121.84)

A = 243.68

There is overlapping surface area that shouldnt be include so we need to subtract it...

For one face of figure 1

3.8 x 10.1 = 38.38

Total:

Figure 1 + Figure 2 - 2(one face)

196.3 - 38.38 = 157.92

243.68 - 38.38 = 205.3

205.3 + 157.92 = 363.22

Answer:

Step-by-step explanation:

The area of the equilateral triangle is [tex]\frac{\sqrt{3}}{4}(6)^{2}=\boxed{9\sqrt{3}}[/tex]